Microsoft thought of launching new Halo game on Xbox One, according to Phil Harrison - Microsoft Studios corporate VP in recent interview.
"A couple of years ago we had the discussion of: 'Should we do Halo at launch and not do Halo 4 last year?'" Spencer said. "But I was committed to getting Halo 4 done last year, and there was no way we were going to turn around with 343 a full Halo game in a year. So that was the plan we set on. I feel good about that."
Had Microsoft shipped a Halo game as a launch title for Xbox One, it would have been the first time since the original Xbox (Halo: Combat Evolved) that a Halo game was available at a new Xbox launch. Bungie's Halo 3 launched in September 2007, two years after the Xbox 360's debut.
Microsoft thinking of launching new Halo game on Xbox One