diff --git a/README.md b/README.md
index cfe27f3..0eed1cf 100644
--- a/README.md
+++ b/README.md
@@ -14,14 +14,14 @@ If you've already cloned you can pull submodules with:
 git submodule update --init --recursive
 ```
 
-To make changes to the website pages:
+To make changes to the website you will need an install of Python 3 with the following libraries:
 
-- use MkDocs v1.0.4 with Markdown v2.6.8, PyYAML v3.13 and futures v3.3.0, e.g.
+- use MkDocs v1.0.4 with Markdown v3.0 and the latest PyYAML
   * `pip install --upgrade --user mkdocs==1.0.4`
-  * `pip install --upgrade --user Markdown==2.6.8`
-  * `pip install --upgrade --user PyYAML==3.13`
-  * `pip install --upgrade --user futures==3.3.0`
+  * `pip install --upgrade --user Markdown==3.0`
+  * `pip install --upgrade --user PyYAML`
+- newer versions may not generate correct front page (to see the installed version, use `pip show mkdocs`)
 - clone this repo,
-- edit or add some ```.md``` files (you may also need to update the ```mkdocs.yml``` config),
-- preview locally with ```mkdocs serve``` (Windows users may need to specify a port, such as ```mkdocs serve --dev-addr 127.0.0.1:4000```),
-- publish with ```mkdocs gh-deploy```.
+- edit or add some `.md` files (you may also need to update the `mkdocs.yml` config),
+- preview locally with `mkdocs serve` (Windows users may need to specify a port, such as `mkdocs serve --dev-addr 127.0.0.1:4000`),
+- publish with `mkdocs gh-deploy`.
diff --git a/src/download.md b/src/download.md
index c3c0151..86efc29 100644
--- a/src/download.md
+++ b/src/download.md
@@ -1,13 +1,13 @@
 ## Latest Release
 
-[New features](https://github.com/glvis/glvis/blob/v4.0/CHANGELOG)
-┊ [User documentation](https://github.com/glvis/glvis/blob/v4.0/README)
+[New features](https://github.com/glvis/glvis/blob/v4.1/CHANGELOG)
+┊ [User documentation](https://github.com/glvis/glvis/blob/v4.1/README)
 ┊ [Code documentation](http://glvis.github.io/doxygen/html/index.html)
 ┊ [Sources](https://github.com/glvis/glvis)
 
 [<button type="button" class="btn btn-success">
-**Download glvis-4.0.tgz**
-</button>](https://bit.ly/glvis-4-0)
+**Download glvis-4.1.tgz**
+</button>](https://bit.ly/glvis-4-1)
 &nbsp;&nbsp;&nbsp;
 [<button type="button" class="btn btn-primary">
 **Use web version**
@@ -22,6 +22,7 @@ or [comments](https://github.com/glvis/glvis/issues/new?labels=comment).
 
  **Filename** | **Version** | **Release Date** | **Size** | **[SLOC](https://github.com/AlDanial/cloc)** | **Notes** |
  ------------ | ----------- | ---------------- | -------- | --------------------------------------- | --------- |
+  [glvis-4.1.tgz](https://bit.ly/glvis-4-1)   | v4.1 | Aug 2021 | 2.4M | 34K  |  |
   [glvis-4.0.tgz](https://bit.ly/glvis-4-0)   | v4.0 | Dec 2020 | 1.3M | 33K  | _modern OpenGL, BSD license_ |
   [glvis-3.4.tgz](https://bit.ly/glvis-3-4)   | v3.4 | May 2018 | 199K | 27K |  |
   [glvis-3.3.tgz](https://goo.gl/C0Oadw) | v3.3 | Jan 2017 | 180K | 25K |  |
@@ -32,9 +33,3 @@ or [comments](https://github.com/glvis/glvis/issues/new?labels=comment).
   [glvis-v1.2.tgz](https://goo.gl/QLcnzW) | v1.2 | Apr 2011 | 150K | 19K |
   [glvis-v1.1.tgz](https://goo.gl/n7wMF9) | v1.1 | Sep 2010 | 148K | 19K |
   [glvis-v1.0.tgz](https://goo.gl/a5slBh) | v1.0 | Jul 2010 | 144K | 18K | _initial release_
-
-
-[comment]: # ([glvis-d32411e0e4.tgz](https://goo.gl/XlXptO) | N/A | Jul 2014 | 171K | 22K | Development release)
-[comment]: # ([glvis-d15634d151.tgz](https://goo.gl/YcpXYl) | N/A | Jul 2013 | 170K | 22K | Development release)
-
-<!-- GLVis originates from the previous research effort in the (unreleased) [AggieFEM/aFEM](http://www.math.tamu.edu/research/vigre/archive/2000c-Lazarov.html) project. -->
diff --git a/src/features.md b/src/features.md
index 488c1c9..3607db6 100644
--- a/src/features.md
+++ b/src/features.md
@@ -46,6 +46,15 @@ When started without any options, GLVis [establishes a server](options-and-use.m
 
 GLVis can also run a [batch sequence](options-and-use.md#glvis-scripts) of commands (GLVis scripts), which enable precise control of particular visualization scenes, and can be useful for making animations.
 
+## Native and Web Versions
+
+<img class="floatpad" src="../img/glvis_app.png" width="130">
+GLVis runs natively on Mac, Linux, and Windows. It can also run a browser, using
+the [web version](https://glvis.org/live), or a Jupyter notebook, using
+[pyglvis](https://github.com/glvis/pyglvis) or [xeus-glvis](https://github.com/glvis/xeus-glvis).
+On Mac, GLVis can be built as a native app bundle that can be added to the Dock, double-clicked in the Finder,
+etc.
+
 ## Open Source
 
 GLVis is an open-source software, and can be freely used under the terms of the [BSD](https://github.com/glvis/glvis/blob/master/LICENSE) license.
diff --git a/src/img/glvis_app.png b/src/img/glvis_app.png
new file mode 100644
index 0000000..bddd9c4
Binary files /dev/null and b/src/img/glvis_app.png differ
diff --git a/src/index.md b/src/index.md
index ec66a75..fc3e7df 100644
--- a/src/index.md
+++ b/src/index.md
@@ -63,21 +63,21 @@ GLVis is based on the [MFEM](https://mfem.org) library and is used in the [BLAST
 
 Date         | Message
 ------------ | -----------------------------------------------------------------
+Aug 31, 2021 | Version 4.1 [released](https://github.com/glvis/glvis/blob/v4.1/CHANGELOG).
+Jul 10, 2021 | [MFEM Community Workshop](workshop.md) in October.
 Feb 19, 2021 | Web version at [glvis.org/live](https://glvis.org/live).
 Feb 17, 2021 | Jupyter support: [`pip install glvis`](https://github.com/GLVis/pyglvis).
-Dec 11, 2020 | Version 4.0 [released](https://github.com/glvis/glvis/blob/v4.0/CHANGELOG).
-Dec 11, 2020 | Switched to a BSD license.
 
 ## Latest Release
 
-[New features](https://github.com/glvis/glvis/blob/v4.0/CHANGELOG)
-┊ [User documentation](https://github.com/glvis/glvis/blob/v4.0/README)
+[New features](https://github.com/glvis/glvis/blob/v4.1/CHANGELOG)
+┊ [User documentation](https://github.com/glvis/glvis/blob/v4.1/README)
 ┊ [Code documentation](http://glvis.github.io/doxygen/html/index.html)
 ┊ [Sources](https://github.com/glvis/glvis)
 
 [<button type="button" class="btn btn-success">
-**Download glvis-4.0.tgz**
-</button>](https://bit.ly/glvis-4-0)
+**Download glvis-4.1.tgz**
+</button>](https://bit.ly/glvis-4-1)
 &nbsp;&nbsp;&nbsp;
 [<button type="button" class="btn btn-primary">
 **Use web version**
@@ -95,7 +95,7 @@ Dec 11, 2020 | Switched to a BSD license.
 
 New users should start with the [options and general use](options-and-use.md) tutorial.
 
-We also recommend reading the [MFEM project](http://mfem.org) documentation.
+We also recommend reading the [MFEM project](https://mfem.org) documentation.
 
 ## Contact
 
diff --git a/src/news.md b/src/news.md
index e349008..102d5cf 100644
--- a/src/news.md
+++ b/src/news.md
@@ -2,6 +2,8 @@
 
 &nbsp;       | |
 ------------ | -----------------------------------------------------------------
+Aug 31, 2021 | Version 4.1 [released](https://github.com/glvis/glvis/blob/v4.1/CHANGELOG).
+Jul 10, 2021 | The inaugural [MFEM Community Workshop](workshop.md) will take place on October 20th, 2021.
 Feb 19, 2021 | Web version at [glvis.org/live](https://glvis.org/live).
 Feb 17, 2021 | Jupyter support: [`pip install glvis`](https://github.com/GLVis/pyglvis).
 Dec 11, 2020 | Version 4.0 [released](https://github.com/glvis/glvis/blob/v4.0/CHANGELOG).