diff --git a/sc2/ChangeLog b/sc2/ChangeLog
index 0a194d39d..93210113a 100644
--- a/sc2/ChangeLog
+++ b/sc2/ChangeLog
@@ -1,4 +1,8 @@
 Changes towards version 0.5:
+- Gfx engine changes: now always 32bpp internally (facilitates
+  alpha channel usage); accelerated platform-specific scaler code;
+  only using alpha channel where needed - Alex
+- New 2x scaler 'hq' (by Maxim Stepin; www.hiend3d.com/hq2x.html) - Alex
 - Removed MikMod i/o hacks (using MREADER i/o now; bug #787) - Alex
 - Fixed fast escape weirdness (bug #619) - from Jan Lönnberg
 - New topographical 4x planet surface scaler (bug #786) - Alex