Dynasty Warriors - Strikeforce

GameSpy
Provides information, screenshots, and a movie.
http://psp.gamespy.com/playstation-portable/dynasty-warriors-multi-raid/

GameZone
News, screenshots, videos, and links.
http://psp.gamezone.com/gamesell/p36711.htm

IGN
Preview, news, trailer, and a message board.
http://psp.ign.com/objects/142/14280418.html

KOEI Warriors
Preview, by LittleDragonZ: "...this was a thrilling game to play and I'm very glad I did spend some of my time on it."
http://koeiwarriors.co.uk/dwsf-preview.php