When is there gonna be a new map pack?

Its been awhile since the DEFIANT map pack came out, are they working on a mythic map pack like they did for halo 3?

The next map pack is gonna be the 7 remakes that ship with halo cea and will be available for download seperatly shortly after the release of the game.

November 15th, with the release of Halo: Combat Evolved Anniversary. Afterwards, there will be no more DLC for Halo: Reach, understandably.