According to the voice of Master Chief, Halo 5 will not be releasing this year, but we will still get to see Halo 2 Anniversary.
"I think you may be ahead of yourself on Halo 5," Downes said. "I wouldn’t expect anything until 2015. What you can look forward to this year is an anniversary edition of Halo 2."
Downes did not give any other information on whether 343 Industries will be the ones developing the game, or what consoles Halo 2 Anniversary Edition will be on.