Not a lot right now, just some new screenshots of one of the stages...but the Music page is amazing. There's a list of all the composers working on the game.
The list is quite telling; between Yoko Shimomura from Kingdom Hearts, and Nobou Uematsu from Final Fantasy making a track... (Nobou is not on the list for some reason, but he was confirmed a few months back and even released a track from the game).
Then there are several composers from Capcom/Clover, and Sega (NiGHTS, specifically).
I wouldn't be surprised to see a Final Fantasy or Kingdom Hearts character appear; or a Capcom character (Megaman?) or Sega (Sonic? Nights?).
The website promises daily weekday updates, so I'll be refreshing a lot

Oh yes...and this is the pure awesome.