GameZone have an interview with the voice of Master Chief, Steve Downes, and he has had said that Halo 5 will not be released this year but we can expect something Halo related.
I think you may be ahead of yourself on Halo 5. I wouldn’t expect anything until 2015. What you can look forward to this year is an anniversary edition of Halo 2.
Halo 2 Anniversary has popped up on our radar before, just two weeks ago we heard that the game may arrive this winter and will be accompanied by a live action series and possibly Halo 5 beta access.
Saber Interactive and Certain Affinity are rumoured to be working on the game, although there has been no official statement from Microsoft.