The stealthy and inventory based third person shooter for the PSP. It will put a lot of attention on "co-op," which seems to include up to 4 players.
Wikipedia
Metal Gear Solid: Peace Walker - Wikipedia, the free encyclopedia
Kojima's e3 page
E3 2009 KOJIMA PRODUCTIONS SPECIAL SITE
e3's Trailer
http://www.youtube.com/watch?v=Sx4k1aa07Ng
Gamescon trailer (Low quality, game footage)
http://www.youtube.com/watch?v=bvS1Cpa8JTc
This game will be featured heavily at TGS 09. The first demo of the game will be distributed there. An english version of Kojima's twitter will follow any information revealed there and includes information released previously.
Kojima Pro Live (Kojima_Pro_Live) on Twitter