The new footage from Halo 4 shows us both the sweeping theatrical introduction as well as the first-person gameplay action.
Master Chief is heading toward a downed UNSC ship. On the way there, he shows off his new weapons and tech.
Halo 4 is being developed by 343 Studios and is due out on November 6.
Here's a video of the complete E3 presentation, with much more gameplay. (It cuts off the very beginning of the trailer, however.)
DISCUSSION
Not sure where all the haters are getting off, but I thought the gameplay trailer looked fantastic. The enemy design is pretty damn insane, and the weapons look nuts. Yes, Cortana is still just as annoying/obvious bla bla.