The new update for Halo: The Master Chief Collection has been released that addresses Halo 3 audio, forge, ranking, parties, quitters, etc. Been playing the game myself today and matchmaking seems to be steadily improving as well. Really enjoying those over 100 multiplayer maps included! 343 Industries is also making room for a remastered Halo 3: ODST and a remastered Relic map next month for free to those who purchased the game between November 11 and December 19 as sort of a apology. No word on pricing beyond the free release.
Here’s a quote from 343i:
Additionally, we’re excited about the progress of the Relic multiplayer map remake and the Campaign for Halo 3: ODST, both of which are on track to release within Halo: The Master Chief Collection next month with our next content update.