3 years later, but maybe still a relevant question.
Here is the full list of changes, including internal changes:
Added code to load global.res from hard disk instead of the encrypted resource, enables texts to be modded
removed encrypted global.res from .exe saving 2mb in file size
removed cheat codes to get space for own code
multi-instancing, run Sacred multiple times at once
multiplayer crash fixed
changed display of version number without changing internal version to stay compatible to closed A.Net
debugger freeze fixed
changed loading of balance.bin to use a hard coded path, we did this change for our mod loader, which would patch the pathes of files to get them loaded from the mod directory
black screen fixed, when using another window in lobby, specifically so you can sit in the chat lobby of A.Net and use your browser or anything else while still be able to read the lobby chat