Activision's E3 press release highlights their partnership with Metallica for Guitar Hero content, while discussing other future game plans. The release makes brief mention of Singularity, calling this the working title for "a first person action game, based on an all-new wholly owned intellectual property, from Raven Software." There's also a bit more detail on the next Wolfenstein game:

Wolfenstein™ – From id Software’s critically-acclaimed and multi-million unit selling Wolfenstein universe, which pioneered and defined the first-person action genre, comes the ultimate supernatural thriller. Set within a near-fictional, historical WWII setting, players take on the role of the heroic OSA agent BJ Blazkowicz as they are thrust into the unknown and unexpected to battle against combat troops, otherworldly forces, and the dark science created by a supernatural Nazi force hell-bent on world domination. Wolfenstein offers players an action-packed experience as they investigate the powers of a dark parallel dimension, join with resistance forces, and employ an arsenal of conventional and otherworldly weapons in attempts to annihilate the Nazi war machine. Ensuring a deep variety of action, Wolfenstein provides gamers with an assortment of interlinked missions that drive an intense, story-driven combat experience; while the Wolfenstein multiplayer experience continues the world-renowned tradition of class-based team objective gameplay with a full arsenal of conventional and supernatural weapons for addictive online warfare. (Xbox 360™, PS3, Windows® PC).