docs: some more v8 migration docs

docs/docs/05-migrations/11-v7-to-v8.md

@@ -44,66 +44,86 @@ type Keeper struct {
 
 See [this PR](https://github.com/cosmos/ibc-go/pull/4703/files#diff-d18972debee5e64f16e40807b2ae112ddbe609504a93ea5e1c80a5d489c3a08a) for the changes required in `app.go`.
 
-TODO: <https://github.com/cosmos/ibc-go/pull/3505> (extra parameter added to transfer's `GenesisState`)
+An extra parameter `totalEscrowed` of type `sdk.Coins` has been added to transfer module's [`NewGenesisState` function](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/modules/apps/transfer/types/genesis.go#L10). This parameter specifies the total amount of tokens that are in the module's escrow accounts.
 
-- You must pass the `authority` to the icahost keeper. ([#3520](https://github.com/cosmos/ibc-go/pull/3520)) See [diff](https://github.com/cosmos/ibc-go/pull/3520/files#diff-d18972debee5e64f16e40807b2ae112ddbe609504a93ea5e1c80a5d489c3a08a).
+### Cosmos SDK v0.50 upgrade
+
+Version `v8.0.0` of ibc-go upgrades to Cosmos SDK v0.50. Please follow the [Cosmos SDK v0.50 upgrading guide](https://github.com/cosmos/cosmos-sdk/blob/v0.50.0-rc.0/UPGRADING.md) to account for its API breaking changes.
+
+### Authority
+
+An authority identifier (e.g. an address) needs to be passed in the `NewKeeper` functions of the following keepers:
+
+- You must pass the `authority` to the ica/host keeper. ([#3520](https://github.com/cosmos/ibc-go/pull/3520)) See [diff](https://github.com/cosmos/ibc-go/pull/3520/files#diff-d18972debee5e64f16e40807b2ae112ddbe609504a93ea5e1c80a5d489c3a08a).
 
 ```diff
 // app.go
 
-	// ICA Host keeper
-	app.ICAHostKeeper = icahostkeeper.NewKeeper(
-		appCodec, keys[icahosttypes.StoreKey], app.GetSubspace(icahosttypes.SubModuleName),
-		app.IBCFeeKeeper, // use ics29 fee as ics4Wrapper in middleware stack
-		app.IBCKeeper.ChannelKeeper, &app.IBCKeeper.PortKeeper,
-		app.AccountKeeper, scopedICAHostKeeper, app.MsgServiceRouter(),
-+		authtypes.NewModuleAddress(govtypes.ModuleName).String(),
-	)
+// ICA Host keeper
+app.ICAHostKeeper = icahostkeeper.NewKeeper(
+  appCodec, keys[icahosttypes.StoreKey], app.GetSubspace(icahosttypes.SubModuleName),
+  app.IBCFeeKeeper, // use ics29 fee as ics4Wrapper in middleware stack
+  app.IBCKeeper.ChannelKeeper, &app.IBCKeeper.PortKeeper,
+  app.AccountKeeper, scopedICAHostKeeper, app.MsgServiceRouter(),
++ authtypes.NewModuleAddress(govtypes.ModuleName).String(),
+)
 ```
 
-- You must pass the `authority` to the icacontroller keeper. ([#3590](https://github.com/cosmos/ibc-go/pull/3590)) See [diff](https://github.com/cosmos/ibc-go/pull/3590/files#diff-d18972debee5e64f16e40807b2ae112ddbe609504a93ea5e1c80a5d489c3a08a).
+- You must pass the `authority` to the ica/controller keeper. ([#3590](https://github.com/cosmos/ibc-go/pull/3590)) See [diff](https://github.com/cosmos/ibc-go/pull/3590/files#diff-d18972debee5e64f16e40807b2ae112ddbe609504a93ea5e1c80a5d489c3a08a).
 
 ```diff
 // app.go
 
-	// ICA Controller keeper
-	app.ICAControllerKeeper = icacontrollerkeeper.NewKeeper(
-		appCodec, keys[icacontrollertypes.StoreKey], app.GetSubspace(icacontrollertypes.SubModuleName),
-		app.IBCFeeKeeper, // use ics29 fee as ics4Wrapper in middleware stack
-		app.IBCKeeper.ChannelKeeper, &app.IBCKeeper.PortKeeper,
-		scopedICAControllerKeeper, app.MsgServiceRouter(),
-+		authtypes.NewModuleAddress(govtypes.ModuleName).String(),
-	)
+// ICA Controller keeper
+app.ICAControllerKeeper = icacontrollerkeeper.NewKeeper(
+  appCodec, keys[icacontrollertypes.StoreKey], app.GetSubspace(icacontrollertypes.SubModuleName),
+  app.IBCFeeKeeper, // use ics29 fee as ics4Wrapper in middleware stack
+  app.IBCKeeper.ChannelKeeper, &app.IBCKeeper.PortKeeper,
+  scopedICAControllerKeeper, app.MsgServiceRouter(),
++ authtypes.NewModuleAddress(govtypes.ModuleName).String(),
+)
 ```
 
 - You must pass the `authority` to the ibctransfer keeper. ([#3553](https://github.com/cosmos/ibc-go/pull/3553)) See [diff](https://github.com/cosmos/ibc-go/pull/3553/files#diff-d18972debee5e64f16e40807b2ae112ddbe609504a93ea5e1c80a5d489c3a08a).
 
 ```diff
 // app.go
 
-	// Create Transfer Keeper and pass IBCFeeKeeper as expected Channel and PortKeeper
-	// since fee middleware will wrap the IBCKeeper for underlying application.
-	app.TransferKeeper = ibctransferkeeper.NewKeeper(
-		appCodec, keys[ibctransfertypes.StoreKey], app.GetSubspace(ibctransfertypes.ModuleName),
-		app.IBCFeeKeeper, // ISC4 Wrapper: fee IBC middleware
-		app.IBCKeeper.ChannelKeeper, &app.IBCKeeper.PortKeeper,
-		app.AccountKeeper, app.BankKeeper, scopedTransferKeeper,
-+		authtypes.NewModuleAddress(govtypes.ModuleName).String(),
-	)
+// Create Transfer Keeper and pass IBCFeeKeeper as expected Channel and PortKeeper
+// since fee middleware will wrap the IBCKeeper for underlying application.
+app.TransferKeeper = ibctransferkeeper.NewKeeper(
+  appCodec, keys[ibctransfertypes.StoreKey], app.GetSubspace(ibctransfertypes.ModuleName),
+  app.IBCFeeKeeper, // ISC4 Wrapper: fee IBC middleware
+  app.IBCKeeper.ChannelKeeper, &app.IBCKeeper.PortKeeper,
+  app.AccountKeeper, app.BankKeeper, scopedTransferKeeper,
++ authtypes.NewModuleAddress(govtypes.ModuleName).String(),
+)
 ```
 
 - You should pass the `authority` to the IBC keeper. ([#3640](https://github.com/cosmos/ibc-go/pull/3640) and [#3650](https://github.com/cosmos/ibc-go/pull/3650)) See [diff](https://github.com/cosmos/ibc-go/pull/3640/files#diff-d18972debee5e64f16e40807b2ae112ddbe609504a93ea5e1c80a5d489c3a08a).
 
 ```diff
 // app.go
 
-	// IBC Keepers
-	app.IBCKeeper = ibckeeper.NewKeeper(
--       appCodec, keys[ibcexported.StoreKey], app.GetSubspace(ibcexported.ModuleName), app.StakingKeeper, app.UpgradeKeeper, scopedIBCKeeper,
-+		appCodec, keys[ibcexported.StoreKey], app.GetSubspace(ibcexported.ModuleName), app.StakingKeeper, app.UpgradeKeeper, scopedIBCKeeper, authtypes.NewModuleAddress(govtypes.ModuleName).String(),
-	)
+// IBC Keepers
+app.IBCKeeper = ibckeeper.NewKeeper(
+  appCodec, 
+  keys[ibcexported.StoreKey],
+  app.GetSubspace(ibcexported.ModuleName),
+  app.StakingKeeper,
+  app.UpgradeKeeper,
+  scopedIBCKeeper,
++ authtypes.NewModuleAddress(govtypes.ModuleName).String(),
+)
 ```
 
+The authority determines the transaction signer allowed to execute certain messages (e.g. `MsgUpdateParams`).
+
+### Testing package
+
+- The function `SetupWithGenesisAccounts` has been removed.
+- The function [`RelayPacketWithResults`](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/testing/path.go#L66) has been added. This function returns the result of the packet receive transaction, the acknowledgement written on the receiving chain, an error if a relay step fails or the packet commitment does not exist on either chain.
+
 ### Params migration
 
 Params are now self managed in the following submodules:
@@ -120,22 +140,11 @@ Legacy params subspaces must still be initialised in app.go in order to successf
 
 ### Governance V1 migration
 
-Proposals have been migrated to [gov v1 messages](https://docs.cosmos.network/v0.50/modules/gov#messages) ref: [#4620](https://github.com/cosmos/ibc-go/pull/4620). The proposal `ClientUpdateProposal` has been removed and replaced with `MsgRecoverClient` and the proposal `UpgradeProposal` has been removed and replaced with `MsgIBCSoftwareUpgrade`.
-
-Ensure that the correct authority field is provided to the ibc keeper.
-
-Remove legacy proposal registration from app.go ref: [#4602](https://github.com/cosmos/ibc-go/pull/4602).
-
-Remove the 02-client proposal handler from the `govRouter`.
+Proposals have been migrated to [gov v1 messages](https://docs.cosmos.network/v0.50/modules/gov#messages) ref: [#4620](https://github.com/cosmos/ibc-go/pull/4620). The proposal `ClientUpdateProposal` has been deprecated and [`MsgRecoverClient`](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/proto/ibc/core/client/v1/tx.proto#L121-L134) should be used instead. Likewise, the proposal `UpgradeProposal` has been deprecated and [`MsgIBCSoftwareUpgrade`](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/proto/ibc/core/client/v1/tx.proto#L139-L154) should be used instead. Both proposals will be removed in the next major release.
 
-```diff
-govRouter := govv1beta1.NewRouter()
-govRouter.AddRoute(govtypes.RouterKey, govv1beta1.ProposalHandler).
-  AddRoute(paramproposal.RouterKey, params.NewParamChangeProposalHandler(app.ParamsKeeper)).
-- AddRoute(ibcclienttypes.RouterKey, ibcclient.NewClientProposalHandler(app.IBCKeeper.ClientKeeper))
-```
+`MsgRecoverClient` and `MsgIBCSoftwareUpgrade` will only be allowed to be executed if the signer is the authority designated at the time of instantiating the IBC keeper. So please make sure that the correct authority is provided to the IBC keeper.
 
-Remove the UpgradeProposalHandler from the BasicModuleManager
+Remove the `UpgradeProposalHandler` and `UpdateClientProposalHandler` from the `BasicModuleManager`:
 
 ```diff
 app.BasicModuleManager = module.NewBasicManagerFromManager(
@@ -145,29 +154,58 @@ app.BasicModuleManager = module.NewBasicManagerFromManager(
     govtypes.ModuleName: gov.NewAppModuleBasic(
       []govclient.ProposalHandler{
       paramsclient.ProposalHandler,
+-     ibcclientclient.UpdateClientProposalHandler,
 -     ibcclientclient.UpgradeProposalHandler,
     },
   ),
 })
 ```
 
+Support for in-flight legacy recover client proposals (i.e. `ClientUpdateProposal`) will be made for v8, but chains should use `MsgRecoverClient` only afterwards to avoid in-flight client recovery failing when upgrading to v9. See [this issue](https://github.com/cosmos/ibc-go/issues/4721) for more information.
+
+Please note that ibc-go offers facilities to test an ibc-go upgrade:
+
+- All e2e tests of the repository can be [run with custom Docker chain images](../../../e2e/README.md#running-tests-with-custom-images).
+- An [importable workflow](../../../e2e/README.md#importable-workflow) that can be used from any other repository to test chain upgrades.
+
 ### Transfer migration
 
-An automatic migration handler (TODO: add link after <https://github.com/cosmos/ibc-go/pull/3104> is merged) is configured in the transfer module to set the [denomination metadata](https://github.com/cosmos/cosmos-sdk/blob/95178ce036741ae6aa7af131fa9fccf3e13fff7a/proto/cosmos/bank/v1beta1/bank.proto#L96-L125) for the IBC denominations of all vouchers minted by the transfer module.
+An [automatic migration handler](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/modules/apps/transfer/module.go#L136) is configured in the transfer module to set the [denomination metadata](https://github.com/cosmos/cosmos-sdk/blob/v0.50.0-rc.0/proto/cosmos/bank/v1beta1/bank.proto#L96-L125) for the IBC denominations of all vouchers minted by the transfer module.
 
 ## IBC Apps
 
-TODO: 
+### ICS20 - Transfer
 
-- <https://github.com/cosmos/ibc-go/pull/3303>
-- <https://github.com/cosmos/ibc-go/pull/3967>
+- The function `IsBound` has been renamed to [`hasCapability`](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/modules/apps/transfer/keeper/keeper.go#L98) and made unexported.
+
+### ICS27 - Interchain Accounts
+
+- Functions [`SerializeCosmosTx`](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/modules/apps/27-interchain-accounts/types/codec.go#L32) and [`DeserializeCosmosTx`](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/modules/apps/27-interchain-accounts/types/codec.go#L76) now accept an extra parameter `encoding` of type `string` that specifies the format in which the transaction messages are marshaled. Both [protobuf and proto3 JSON formats](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/modules/apps/27-interchain-accounts/types/metadata.go#L14-L17) are supported.
+- The function `IsBound` of controller submodule has been renamed to [`hasCapability`](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/modules/apps/27-interchain-accounts/controller/keeper/keeper.go#L112) and made unexported.
+- The function `IsBound` of host submodule has been renamed to [`hasCapability`](https://github.com/cosmos/ibc-go/blob/v8.0.0-beta.0/modules/apps/27-interchain-accounts/host/keeper/keeper.go#L95) and made unexported.
 
 ## Relayers
 
 - Getter functions in `MsgChannelOpenInitResponse`, `MsgChannelOpenTryResponse`, `MsgTransferResponse`, `MsgRegisterInterchainAccountResponse` and `MsgSendTxResponse` have been removed. The fields can be accessed directly.
 - `channeltypes.EventTypeTimeoutPacketOnClose` (where `channeltypes` is an import alias for `"github.com/cosmos/ibc-go/v8/modules/core/04-channel"`) has been removed, since core IBC does not emit any event with this key.
-- Attribute with key `counterparty_connection_id` has been removed from event with key `connectiontypes.EventTypeConnectionOpenInit` (where `connectiontypes` is an import alias for `"github.com/cosmos/ibc-go/v8/modules/core/03-connection/types"`) and attribute with key `counterparty_channel_id` has been removed from event with key `channeltypes.EventTypeChannelOpenInit` (where `channeltypes` is an import alias for `"github.com/cosmos/ibc-go/v8/modules/core/04-channel"`) since both (counterparty connection ID and counterparty channel ID) are empty on `ConnectionOpenInit` and `ChannelOpenInit` respectively. 
+- Attribute with key `counterparty_connection_id` has been removed from event with key `connectiontypes.EventTypeConnectionOpenInit` (where `connectiontypes` is an import alias for `"github.com/cosmos/ibc-go/v8/modules/core/03-connection/types"`) and attribute with key `counterparty_channel_id` has been removed from event with key `channeltypes.EventTypeChannelOpenInit` (where `channeltypes` is an import alias for `"github.com/cosmos/ibc-go/v8/modules/core/04-channel"`) since both (counterparty connection ID and counterparty channel ID) are empty on `ConnectionOpenInit` and `ChannelOpenInit` respectively.
+- As part of the migration to [governance V1 messages](#governance-v1-migration) the following changes in events have been made:
+
+```diff
+// IBC client events vars
+var (
+  EventTypeCreateClient          = "create_client"
+  EventTypeUpdateClient          = "update_client"
+  EventTypeUpgradeClient         = "upgrade_client"
+  EventTypeSubmitMisbehaviour    = "client_misbehaviour"
+- EventTypeUpdateClientProposal  = "update_client_proposal"
+- EventTypeUpgradeClientProposal = "upgrade_client_proposal"
++ EventTypeRecoverClient              = "recover_client"
++ EventTypeScheduleIBCSoftwareUpgrade = "schedule_ibc_software_upgrade"
+  EventTypeUpgradeChain               = "upgrade_chain"
+)
+```
 
 ## IBC Light Clients
 
-- No relevant changes were made in this release.
+- Functions `Pretty` and `String` of type `MerklePath` have been [removed](https://github.com/cosmos/ibc-go/pull/4459/files#diff-dd94ec1dde9b047c0cdfba204e30dad74a81de202e3b09ac5b42f493153811af).

e2e/README.md

@@ -375,7 +375,7 @@ json matrix files under .github/compatibility-test-matrices and is equivalent to
 
 ## Importable Workflow
 
-This repository contains an [importable workflow](https://github.com/cosmos/ibc-go/blob/bc963bcfd115a0e06b8196b114496db5ea011247/.github/workflows/e2e-compatibility-workflow-call.yaml) that can be used from any other repository to test chain upgrades. The workflow
+This repository contains an [importable workflow](https://github.com/cosmos/ibc-go/blob/185a220244663457372185992cfc85ed9e458bf1/.github/workflows/e2e-compatibility-workflow-call.yaml) that can be used from any other repository to test chain upgrades. The workflow
 can be used to test both non-IBC chains, and also IBC-enabled chains.
 
 ### Prerequisites