You may well have missed this titbit in the UNSC weapons video that 343industries released yesterday, at 0:47 in the video we get the briefest of glimpses of the Halo 4 Promethean Pistol (a weapon I have speculated about previously). I've slowed it down to snail's pace so we can get a good look at it, check it out:
Unfortunately we don't see it fired, but we do see it assemble itself in a similar fashion to the other Promethean weapons. Nice.
- Cowboy Out.