Nintendo saved their biggest announcement for last at this morning's E3 press conference, unveiling the first full sequel to a 3D Mario game on the same system: Mario Galaxy 2.
From the trailer on show, it appears to be the same deal as the first game. Planetoids you run around, 3D puzzles, unique mechanics on various levels, flying pirate ships and, yes, bee suits.
The graphics have seen a slight improvement from the looks of things, with nicer grass, but yeah, expect more Mario Galaxy. Just newer.
It's planned for release sometime in 2010. Sadly, it won't be playable on the showroom floor this week.