Bungie has announced over its blog campaign matchmaking playlists will be implemented into Halo: Reach on October 19 along with a rank cap added sometime in the near future.
Bungie also said it hopes to “roll out a dedicated Infection and Snipers playlist” along with some other changes. With the rank cap increased, credits earned now beyond the Lt. Col. Grade C cap will count towards the new level when it is added in.
Likely, this will account for a slew of automatic rank increases for players the day of patch.
This week’s Bungie Update is rather long and detailed, so you better mosey on over and have a look at it if you play it.