I just saw this while perusing through the Fallout: New Vegas Wiki Homefront. It's built on the Unreal Engine like a lot of the shooters coming out recently, and is essentially a reworking of Frontlines: Fuel of War but turned into a completely new game. The developers state that the main idea they wanted to work with on this shooter is the use of guerilla-style tactics. Here's a link to the official website. The trailer looks pretty cool.