The latest update for Halo: The Master Chief Collection should be available soon, after the patch hits its final stages of testing according to 343 Industries. The update will improve matchmaking, stability, party and invite systems and a lot more.
“As we announced previously, this content update includes fundamental changes to the aforementioned systems, and making and validating these changes requires substantial time beyond what was required for prior updates,” said 343 Industries on Halo Waypoint.
“We’re happy with the progress on the next CU, with significant progress being made on big and small issues, and we’re being diligent in gameplay and stress testing to ensure that it is a meaningful update. Last week, Team Snipers replaced SWAT as the featured playlist, and we expanded Rumble Pit to add Halo 3 and Halo 4.
Many of you have asked why SWAT nor Team Snipers have Halo 3 variants included, and this is due to a Halo 3-specific issue regarding non-default map variants that we’re working to fix. Once resolved, custom map variants (tournament maps, maps with specific on-map weapons, Forge maps, etc.) will be included into permanent and featured playlists.”
Source: Halo Waypoint.