If you want your old Halo maps and game types, make sure you prepare your file share.
Last month, 343 Industries informed Halo fans that they were looking to move players’ file shares from Halo 3, 4, and Reach to The Master Chief Collection, which hold player-created maps and game types. Since then, 343 has updated players on Halo Waypoint confirming that the migration will take place in August. Due to “technical limitations” the developer will only be able to do it one time. The migration will be separated into two different days: one day will focus on player-made game types, while the other focuses on maps.
343 will be moving game types to The Master Chief Collection on August 12 at 10am PDT, and maps will be moved on August 26 at 10am PDT. For those that want their old games and maps transferred over, you have until these deadlines because there will never be another chance to do so. To make sure that your file share is moved over successfully, have everything saved in the file share and you should be good to go.
Most recently, Halo: The Master Chief Collection was announced for PC as well as Halo: Reach being added to the collection. Owners of the collection are able to play every entry of the Halo franchise (outside of Halo 5) in the Master Chief Collection.
The next entry of the franchise, Halo Infinite, was announced last year at E3 during the Xbox Press Briefing. We got a new trailer for the game this year, but unfortunately, no gameplay was shown. We will, however, update with more news regarding Halo: The Master Chief Collection and Halo Infinite as it comes along.