During the Xbox E3 press briefing currently being held in Los Angeles Microsoft announced Halo: The Master Chief Collection.
The collection will run at 1080p, 60 fps, and will include the Halo: Nightfall TV series on top of Halo 1 to 4. It will be released on November 11th.
You can check out a trailer for the beta of Halo 5: Guardians, which will be included in the collection just below:
Update: added the official version of the trailer and the official Halo: The Master Chief Collection trailer.