Changelog.md

@@ -2,6 +2,14 @@
 
 Dates and release notes for all production releases of the Briar Desktop program. For the Android app see [its respective changelog](https://code.briarproject.org/briar/briar/-/wikis/changelog).
 
+### [0.4.0-beta](https://code.briarproject.org/briar/briar-desktop/-/commits/0.4.0-beta)
+
+2022-01-31
+* Add support for forums
+* First version that's available for MS Windows
+* Update Briar core to [1.4.20](https://code.briarproject.org/briar/briar/-/wikis/changelog#anchor-1420)
+* Update translations and add Taiwanese Mandarin
+
 ### [0.3.1-beta](https://code.briarproject.org/briar/briar-desktop/-/commits/0.3.1-beta)
 
 2022-10-13