Update releases.md

ivder · web-flow · commit 4c6a7b4ee98c · 2026-01-21T13:41:12.000+01:00
diff --git a/releases.md b/releases.md
@@ -3,6 +3,7 @@
 ### Version 4.15.0
 ##### January 21, 2026
 - [**Added**] Windows editor, build and UWP support Direct3D12 Graphics API and Auto Graphics API in Unity6.
+- [**Improvement**] Optimized HISPLAYER_EVENT_PLAYBACK_SEEK_END and EventPlaybackSeekEnd.
 
 ### Version 4.14.5
 ##### January 15, 2026
