Changelog.md

@@ -2,6 +2,12 @@
 
 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).
 
+### [0.6.5-beta](https://code.briarproject.org/briar/briar-desktop/-/commits/0.6.5-beta)
+
+2024-12-XX
+* Extend app validity until June 2026
+* Update Briar core to [1.5.15](https://code.briarproject.org/briar/briar/-/wikis/changelog#anchor-1515)
+
 ### [0.6.4-beta](https://code.briarproject.org/briar/briar-desktop/-/commits/0.6.4-beta)
 
 2024-08-14