I find this video very helpful actually, and for those who are behind (and want to see new) on information, this video is for you:
Details:
Classic Sniper Rifle, and Jetpack?
We get a look on the zoom of the new sniper rifle, and a picture of what appears to be a....Jetpack?
Armor Abilities:
Hologram, Jetpack, Sprint, Forerunner Vision, and Active-Camo
Release Date:
Halo 4 is confirmed to be released: November 6, Tuesday 2012.
Details on Multiplayer:
Getting hit by a weapon drop can kill you
Any map can support any gametype and player amount
Tournaments will be featured as an open option in custom games
Sprint is faster than Halo: Reach's sprint
Sprint is not unlimited, there is a limited "meter"
Getting shot will slow down players while sprinting
Forerunner vision emits a sound to others
Spartan Ops and the Halo 4 multiplayer will carry over
Spartan Ops is more focused on teamwork
All this information is true, I hope you enjoyed and don't forget to give a like!