From the makers of Half-Life and Counter-Strike comes Halo 4. Apparently.
According to Official Xbox Magazine USA, they've learned that Halo 4 is currently in development as a launch title for the Xbox 3, NextBox, Xbox 720, whatever the codename is now. If this is true, it's certainly one of the best choices, although personally, I would've preferred to see the reigns handed to Infinity Ward or Ubisoft.
The next Xbox is quite a way off too - analysts estimate a 2010/2011 release, just before Sony, whose PS4 is due in 2014.