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.
New versions from the Kedalbe were added to the mod, you can find them in the 6.56b patch for the 6.5b full version only at my site Firefoxccmods.com
Other additions not added by the moment are new textures from Nawrocki for the ISD. You can see how the new ISD from the Black Sun looks at this video.