Alliance are a serie of different mods. On the Star Wars GC, you can play the civil war Empire vs Rebel era + Black Sun and soon the Republic and CIS.
Time has come and the new patch, the last developed the past months has been released. I have not tested it, just the game updated now, 7.5MB of patch, more than enough for a list of improves in the main game exe.
You can read here the list of changes. Clearly the first fix, the savegames is the most important. From my point of view is the unique big improve. All the others are minimun things with exception from multiplayer fix.