In a tweet by the official French Xbox account Microsoft has revealed their plans for Halo: The Master Chief Collection on the next-gen consoles.
Microsoft and 343i are planning to bring 120 frames per second to the campaign and multiplayer, with a resolution up to 4K on Series X. The resolution for Series S haven’t been revealed yet. But it seems both next-gen consoles will receive 120 frames per second patches. The targeted release date for all of this is November 17th, one week after the launch of the Xbox Series X and Xbox Series S.