EX Billy has 1 new special move and 1 super which replaced the last one (I think...I couldn't pull the other motion off, whatever it was).

+K: A closeup attack where Billy's stick becomes a 3-parter, and he whacks the opponent with one end, then with the other. The thing is, both whackings won't connect if you do a close C/D before. You can only whack with the side he does first, while the other side misses. Not linkable from weak attacks either, I think. You probably have better choices than this one, unless there's something hidden here that I didn't find out.
New super.
qcfx2+K: Flaming wheel uppercut super. From what I tried, it doesn't have startup invincibility, but it's generally a punishing DM to start with. Comes out pretty fast and Billy flies all the way to the top of the screen while spinning his stick like a madman. This is your anti-air super right here.