Guns, Grenades, and Gravity is whats going to fuel Namco Bandai's new IP Inversion. Gotta love new titles trying to bring something new to the table.
Manipulating gravity during a gunfight? well that could be trippy. I'm pretty curious how multiplayer will play out with a bunch of people having the same ability to play with gravity. Hopefully with this unique concept, they maximize it by providing a lot of interesting and clever things players can do with their abilities. If not, and the whole gravity thing gets old fast, it's just another 3rd person cover shooter.
A fairly new developer called Saber Interactive is developing Inversion. The best known game they worked on was Timeshift which was nothing great, aside from that - nothing.
Inversion is coming out on Playstation 3, Xbox 360 next year in early february. There might be a PC version, but no date yet.