Halo 4's Multiplayer Maps arent being used?

I enjoy Halo 4’s multiplayer maps they use, but im kinda getting tired of playing the same maps, over and over again (True the maps are picked by the players, but they always pick the same one), so where are the rest of them at (just so the rotation can change up a little bit).

Defualt Maps not currently being used in mutliplayer.
-Ravine’s map variant.
-Impact’s map variant.
-Exile’s map variant’s.

I was just wondering when they will be implamented in to the multiplayer’s playlist?

Yes im tired of playing ragnorock over and over again.

If any one has direct information about my question, would you kindly just message me directly?