LOOK OUT FOR THE ROFL FRAMES OF DOOM!
So far I've seen 3 new weapons, + 1 new mounted weapon, and ... well, not really a new vehicle, but still.
Weapons:
Suppressed M7
Old magnum
Brute plasma rifle from Halo 2
Mounted Gauss turret.
Vehicles:
None, a few re-skinned vehicles.
Whoever sees a new vehicle/weapon, just a possible split second in the background - post it.
(Static vehicles do not count, however NPC vehicles do)
[Edited on 08.01.2009 5:57 AM PDT]