v0.11.6 release notes (#2371)

Author: sawka

docs/docs/releasenotes.mdx

@@ -6,6 +6,17 @@ sidebar_position: 200
 
 # Release Notes
 
+### v0.11.6 — Sep 22, 2025
+
+Patch release to address an editor bug when you open two files in separate edit widgets. Also adds Mermaid support to markdown blocks.
+
+* WIP: Big AI overhaul coming (multi-modal support, premium models, and tool support)
+* WIP: Integrating new Tsunami widget framework to make writing and running Wave widgets easier
+* Lots of package updates
+* Much internal cleanup (preview widget)
+* More migration to Tailwind v4 CSS
+* Build updates, switched to npm from yarn
+
 ### v0.11.5 — Aug 28, 2025
 
 Another housekeeping release to modernize Wave and bring it more up to date.