The next offering from Team Ico (Shadow of the Colossus, Ico) scheduled to be released in 2010. It's speculated that The Last Guardian is the first part of the trilogy with Shadow of the Colossus being part two and Ico being the third.
E3 2009 Trailer
New videos from the 2009 Tokyo Game Show; making of and trailer:
Two conversations with designer and director Fumito Ueda
Discussing The Last Guardian
Hopefully, Team Ico will even go the SCEA route with GoW 1 & 2 and release remastered HD versions of SoC and Ico.
EDIT 1/04/10: New Screenshots