It's a very high possibility look on halopedia for mor information.
another enemy besides the precursors is the didect (a forerunner) and the army he commands which is called the prometheans. also the covenant are also on Requim so they are also an enemy in Halo 4.
apparently the precursors are the ANCIENT FLOOD! (the precursors are beings that lived before the forerunners, and were also the enemies of them)
Halo 4 is called Halo 4.
Halo rights are owned by Bungee. Technically Halo 4 is "Halo ODST"
Yes, there is a Halo 4.
There is multiplayer in halo 4
there is no halo 4 because it is a trilogy. halo 3 was the end of the series.
halo 4 limited edition, comes with a copy of halo 4, a T-shirt and special armor customization.
Masterchief
No, the Arbiter is not in Halo 4.
Halo 4
In the Halo Universe, Halo CE. In reality, Halo 4.
Not yet, but there will be. Well, technically, you could classify Halo: Reach as Halo 4, but as for the actual Halo 4, its currently in development by 343 Industries.