diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6855e3f91..4695279fe9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,44 @@
 # Change Log
 
+## Upcoming release 0.12.0
+
+**New features:**
+
+- Persistent fragment logs, optionally enabled to record all fragments received
+  by the node and accepted into the mempool. These logs can be used for
+  verification of the blockchain result, forensics, and possibly to compute
+  the vote tally from the received fragments off-chain as a backup counting
+  method.
+- `scripts/bootstrap.py`, a cross-platform Python script to replace tje older
+  collection of outdated shell scripts.
+
+**Changes:**
+
+- Updated the Poldercast implementation to use poldercast 1.2
+  and reworked quarantine rules to improve network stability.
+- The log configuration only deals with a single output backend.
+  It's no longer possible to configure multiple log outputs.
+- Changed the p2p listening address and port configuration:
+  the field name is `listen` and the value format is _addr_`:`_port_.
+- The fragment log REST API provides more elaborate information on fragment
+  status, including the rejection reason.
+- The REST API endpoints for submitting fragments return an error status code
+  if the fragments are rejected by the node, rather than being admitted to the
+  mempool and propagated across the network.
+- Added logging to track REST requests, including possible OpenZipkin/B3
+  tracing information from the HTTP headers.
+
+**Bugs fixed:**
+
+- Use voteplan ID as the CRS for private voting protocol to prevent use of
+  compromised CRS values.
+- Ignore an unworkably small value of `log_max_entries` in the configuration.
+  The minimum is `pool_max_entries * n_pools`.
+
+## Releases 0.10.x - 0.11.x
+
+**TODO:** fill in with a summary of changes.
+
 ## [v0.9.3](https://github.com/input-output-hk/jormungandr/tree/v0.9.3) (2020-09-24)
 
 Rolled in recent fixes, testing improvements, and dependency updates for the Catalyst project
diff --git a/Cargo.lock b/Cargo.lock
index 694d6caa00..64425ae54a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1797,7 +1797,7 @@ checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
 
 [[package]]
 name = "jcli"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 dependencies = [
  "assert_fs",
  "base64 0.13.0",
@@ -1831,7 +1831,7 @@ dependencies = [
 
 [[package]]
 name = "jormungandr"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 dependencies = [
  "arc-swap",
  "async-graphql",
@@ -1891,7 +1891,7 @@ dependencies = [
 
 [[package]]
 name = "jormungandr-integration-tests"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 dependencies = [
  "assert_cmd",
  "assert_fs",
@@ -1936,7 +1936,7 @@ dependencies = [
 
 [[package]]
 name = "jormungandr-lib"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 dependencies = [
  "base64 0.13.0",
  "bech32",
@@ -1971,7 +1971,7 @@ dependencies = [
 
 [[package]]
 name = "jormungandr-scenario-tests"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 dependencies = [
  "assert_fs",
  "chain-addr",
@@ -2011,7 +2011,7 @@ dependencies = [
 
 [[package]]
 name = "jormungandr-testing-utils"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 dependencies = [
  "assert_fs",
  "base64 0.13.0",
diff --git a/jcli/Cargo.toml b/jcli/Cargo.toml
index ac270e1d05..127fb9c21f 100644
--- a/jcli/Cargo.toml
+++ b/jcli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "jcli"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 authors = [ "dev@iohk.io" ]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/input-output-hk/jormungandr"
diff --git a/jormungandr-lib/Cargo.toml b/jormungandr-lib/Cargo.toml
index 712d32dfe9..f513601b18 100644
--- a/jormungandr-lib/Cargo.toml
+++ b/jormungandr-lib/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "jormungandr-lib"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 authors = ["dev@iohk.io"]
 edition = "2018"
 
diff --git a/jormungandr/Cargo.toml b/jormungandr/Cargo.toml
index 6662524a33..02c1e530df 100644
--- a/jormungandr/Cargo.toml
+++ b/jormungandr/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "jormungandr"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 authors = [ "dev@iohk.io" ]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/input-output-hk/jormungandr"
diff --git a/testing/jormungandr-integration-tests/Cargo.toml b/testing/jormungandr-integration-tests/Cargo.toml
index d9be80a14b..5636882177 100644
--- a/testing/jormungandr-integration-tests/Cargo.toml
+++ b/testing/jormungandr-integration-tests/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "jormungandr-integration-tests"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 authors = [ "dev@iohk.io" ]
 edition = "2018"
 
diff --git a/testing/jormungandr-scenario-tests/Cargo.toml b/testing/jormungandr-scenario-tests/Cargo.toml
index 1f2df11a00..6286103263 100644
--- a/testing/jormungandr-scenario-tests/Cargo.toml
+++ b/testing/jormungandr-scenario-tests/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "jormungandr-scenario-tests"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 authors = [ "dev@iohk.io" ]
 edition = "2018"
 default-run = "jormungandr-scenario-tests"
diff --git a/testing/jormungandr-testing-utils/Cargo.toml b/testing/jormungandr-testing-utils/Cargo.toml
index 1655ea3b01..8f2bab883f 100644
--- a/testing/jormungandr-testing-utils/Cargo.toml
+++ b/testing/jormungandr-testing-utils/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "jormungandr-testing-utils"
-version = "0.12.0-dev"
+version = "0.12.0-rc.1"
 authors = ["Nicolas Di Prima <nicolas.diprima@iohk.io>"]
 edition = "2018"