update changelog

CHANGELOG.md

@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - Playlists ignored this setting in earlier builds
 - Always randomize start points for all collections the first time they are used
   - Previously, only collections scheduled during the first day of a playout build had their start points randomized
+- Allow multiple ETV instances when multiple config folders are used
 
 ## [26.6.0] - 2026-07-09
 ### Added