So here's a list of moves from the games that Dedede could possibly have in Brawl. Tell me to add to and correct from the list and I shall. Sorry if I got a lot wrong; I don't know what many of them are 'officially' called.
Not having a chance to play Kirby in years I got them mostly from http://www.youtube.com/watch?v=QfhKljGSLdo.
Waddle Dee Toss*
Jet Hammer*
Swiming*
*Announced
Not having a chance to play Kirby in years I got them mostly from http://www.youtube.com/watch?v=QfhKljGSLdo.
Non-Continuity:Super Dedede Jump*
Dive
Rage Furry
Angry Dash
Spin Leap
Matter Hover
Dark Matter Chomp
Basic Mallet Slam*
Manic Mallet Slam
Mallet Toss
Kirby-Like Vacuum
> Spit Out
> Electric/Tracking Spit Out
Kirby-Like Air Balloon Inflate*
> Air Puff Gun
Sleep
Mecha-Dedede
Waddle Dee Toss*
Jet Hammer*
Swiming*
*Announced