Although it could be possible but it is not going to happen.
So with all the debates about the resolution and frame rates, an avid fan asked 343 Industries franchise director Frank O’Connor whether Halo 2 will be rendered in 4K resolution. The argument that the fan put forward was that the original Halo 2 was designed for what was a mid-spec PC in 2001.
“Yeah, we won’t be doing that, for about a hundred reasons that include the frame buffer switch,” Frank replied on NeoGaf. “And it wouldn’t really be a cinch regardless, there’s more afoot than simply turning up the settings. I’m sure it would be possible. But it ain’t happening. However, I saw little tiny gaps in the jungle canopy on Halo 3 that weren’t visible before. As I was doing that whole, “ooh look up at the sun through the trees” thing you do on Halo games.”
He further defended his claim that the graphics in the Ascension multiplayer map has already been improved a lot. “Ascension IQ is already substantially improved since E3, including anti-aliasing,” he stated.
Halo: The Master Chief Collection is due this November exclusively for the Xbox One.