Hi justin3009, I know this is out of no where but I also try out the 4.0 beta the one posted out on 7th May 2018.
I just want to share what I encounter during my play:
1) Normal X can still charge up most of the sub-weapon except P.Bomb and T.Fang,
2) Well, I don't know is it because I initially started the game as Zero and also obtained the Z-saber,
If you clear the game as normal X, you start the NG+ as Zero.
If you clear the game as Zero, you start the NG+ as normal X and you also manage to keep a buggy Hyper C.
3) Sometimes after switching your character, the 1st door leads to sub-boss/boss cannot be enter.
You have to move the character away until the door is unseen then move back to the door to re-enter it.
4) Sometimes if you use normal X in 1st Doppler fortress, during/after the sub-boss, normal X will gain some armor parts.
5) Finally, the sub-boss in Neon Tiger stage cannot be easily taken down with X's buster/Z-saber. Is that normal?