The first update for Halo: The Master Chief Collection will add Xbox One X Support. 343i shared a short list of new features and additions that will be added to the game once the first update goes live.
Is there any plan to bring Halo: The Master Chief Collection to PC and Xbox Game Pass? 343 Industries answered these two hot topics and many other things in a recent update on Master Chief Collection Development Update #2 session.
Halo: The Master Chief Collection Apr 2015 Patch Live Now On Xbox One, Size 1600MB, All Changes Detailed: focuses on ranking, matchmaking penalties, stability, as well as game-specific improvements for each title.