As of now, Super Smash Bros Brawl will be releasing in Japan on January 24th. Whether or not this delay affects the US is up in the air. I think I might need to schedule an appointment with my psychiatrist.
On the upside, Sonic will be playable. (my bets are that Shadow will be there as well) along with online co-op.
Update: It's been delayed until February in the States. Now, if you'll excuse me, I have an appointment to make.