Halo: The Master Chief Collection will be releasing on PC this year, and just yesterday Brian Jarred of 343 Industries revealed on Twitter that Halo: The Master Chief Collection will have cross progression. That means stats, unlocks, progression, etc. will carry over between Xbox and PC. Brian Jarred tweeted the following when answering a question on Twitter;
It also looks like while cross-play will not be available at launch, it is something they will be looking into for the future.
Cross progression is always nice to have, being able to play a part of a game on a console and then going to the PC and picking up right where you left off is a nice option to have. As for cross-play, I do think this will be something that is available in the future of Halo: The Master Chief Collection, especially since Microsoft, is always wanting to bring the console and PC ecosystems together.