Even though the PSP Go is already a month old in the US, Sony's hardware revision of the PSP is due to hit shelves next week in Japan.  In order to promote the launch, Sony is calloborating with Sega and Konami to deliver two new demos of the PSP's hottest upcoming games.

The first demo is of Valkyria Chronicles 2, sequel to the 2008 PS3 title.  The Valkyria Chronicles 2 demo will be the same one that was playable at TGS and all the other recent Japanese press events.

The second demo is Metal Gear Sold: Peace Walker.  The demo is different than the one that was downloadable after TGS 2009, but will be based on builds that have been playable for the press.  The demo will also include the new control scheme, which Kojima developed in response to fan input after playing the TGS demo, but we're still not sure what that is.

These demos will release on November 1st in Japan.