Eurogamer: Provides information, news, and screenshots.
GameFAQs: Release data, cheats, and a message board.
GameSpot: Reviews, news, previews, images, videos, cheats, links, and a forum.
GameSpy: Bullet Witch: Preview, screenshots, and movies.
IGN: Bullet Witch: News, previews, screenshots, videos, and a message board.
Team Xbox: Movie, screenshots, news, and a preview.
UGO: Preview, by Russell Frushtick: "...based on what we've seen, it should be worth keeping an eye out for."