Compared to the later beta and final, it is pretty much ported straight from the first game, as it still has the original title screen. Other things are left unchanged or unfinished, such as the enemy names and the backgrounds to the fight scenes. The font was also slightly tweaked by a few pixels here and there. Other things are slightly different but you'll have to find them.
0x000000: ARETHA2 VER 0.05
Below are comparison screenshots from the first 2 betas, then retail. Enjoy!