I picked this up off of the Fusion Question thread. Thanks to Kaizer21 (who I hope got his/her facts straight):
"Well, not much information has been passed out but i'll try to make due from what i've read and what I remember (so don't flame me if I get the wrong info, or i'll shock you with my lightning ball
)
Brave/Valor Form (Goofy)
Jumpsuit turns bright red with a sort of fleur-de-lis symbol on his pant legs
Able to summon a keyblade of pure energy
His strength rises immensely
His speed rises dramatically (?)
Is able to finish off aerial combos with a strike of lightning (?)
???? Form (Donald)
His jumpsuit turns blue with blue flame symbol on his pant legs
His shoes start glowing blue (speed increases? Dodge Heavy?)
Spins ONE keyblade around at a high speed
His magic and defense values rise dramatically (?)
Plus, in an interview, AIRC, he mentiones that there are different Drive forms with a wide variety of attack and offensive patterns. Gee, what does that tell you? LOL."
Pretty cool stuff. Keep posting.