"Halo 5: Guardians is a bigger effort than Halo 4," Ross wrote on Xbox Wire. "That applies to the content and scope of the game, as well as the technology in what's now a brand new and more powerful engine. Certainly there are some core elements carried over from prior games, but we've invested a huge effort in retooling our tech to take full advantage of the Xbox One's hardware and ecosystem to create worlds and experiences worthy of next-gen."
Halo 5: Guardians (Announcement)
At last year's E3, Ross said, "In 2014, Halo combat will truly evolve, and your journey with Halo on Xbox One begins." Today the general manager reiterated that journey "definitely begins in 2014 with a giant leap, rather than one small step," even if that giant leap isn't Halo 5: Guardians. Earlier this year, Master Chief actor Steve Downes appeared to let slip of an anniversary edition of Halo 2, though he later distanced himself from what was quoted.
We won't have to wait long to find out what the giant leap is, because 343 Industries will reveal more on its Halo plans for 2014 at Microsoft's E3 conference next month.