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.
If you have not seen this at 6.02, perhaps you have not played a planet far away from the core. In them, you can see a different star system remembering the star background showed in the last images from Episode V. It was made for the 6.02 by Nawrocki.
It is a very good addition because at combination with the nebulae from each galaxy zone, each star background looks different to the others.
what ship is that? it resembles a victory mixed with a nebula class. still looks rocking though.