Metal Gear Rising: Revengeance, a Kojima Productions and Platium Games joint, is out in February 2013. It might not be exactly the kind of Metal Gear game you're after, but it might be exactly the kind of Metal Gear trailer you're after.
Late last week, Metal Gear creator Hideo Kojima revealed a new Zone of the Enders project. Fans of the sci-fi series have been waiting for Kojima to start work on a new Z.O.E. Thing is, he won't be doing much much work on it.