http://tvtropes.org/pmwiki/pmwiki.php/VideoGame/KingdomHeartsII?from=Main.KingdomHeartsII

 

According to TVtropes, during the final battle of KH2, regardless of what level your drive forms are, they get auto bumped up to maximum level(of course this only lasts for the final battle, it doesnt carry on into a clear save file) and your Growth abilities are maxed out. Already maxed out Drive forms will be pushed into a secret 5th level of power, and when fighitng the final form of xemnas, a 6th form is unlocked for the drives, which allows for infinite double jumps and glide in the battle. That's pretty cool.

 

Also, apparently Critical mode in 2FM allows you to do double finishers, it wasnt in the original game.

Woah that's pretty interesting. I thought it was the environment ingame that gave you the ability to do glide and double jump.i think you can do three finishers in kh2 FM.

The first bit was already standard in KH2, at least in the second portion of the Xemnas armor battle, as well as the fact that you had infinite aerial dodges.  Also, there isn't a 'secret 5th level.'  Drive forms always remain one level higher in their movement abilities than Sora can learn in standard gameplay, so the 5th level is standard.  As for everything else, I don't know enough to really be sure.

Pffft. I thoght every one knew that...

Woah that's pretty interesting. I thought it was the environment ingame that gave you the ability to do glide and double jump.i think you can do three finishers in kh2 FM.

You can do up to 4 finishers in KH2FM with the Rumbling Rose.