The exec told GameRant that gamer's can expect a big reveal at this year's E3:
Unfortunately I cant say anything about Rock Band 3 at this point except that its coming this fall and its a big step forward for Rock Band, said Rigopulos.
This has been a two-year development cycle on this title and its a pretty significant level up from where weve been. Were pretty excited about unveiling it at E3 this year. Holiday 2010 release.</blockquote>
In all likelihood, it will probably showcase during Microsoft's E3 conference if past performance is anything to go by. Still, we fully expect the game on PS3 and are excited to see where the franchise goes.