How many maps will come on the new Halo 3: ODST when the game ships later this year? I’m glad you asked. 24. Twenty Four. This gem of info comes courtesy of the Bungie weekly update:
Just some minor housekeeping this week. We wanted to address an oft-asked, but pertinent question about the Halo 3 [...]

Spray and Pray
One other thing that is “similar but different” in Halo 3: ODST is the M7 Submachine Gun.  You first held this bullet hose in your hot little hand back in the glory days of Halo 2, where you quickly learned that a single SMG on its own probably wasn’t the best implement of [...]