A blog update over at Halo Waypoint clued fans into what's coming for Halo 4.
First up, the Majestic Map Pack is confirmed to arrive in "late" February, though a more specific date hasn't been mentioned. The pack will offer two small maps and one medium-sized map, and comes at the same time as a Title Update. According to the posting, fans can "expect more information on all of those things next month."
Regular Matchmaking is set up again later this month, and "includes the return of the second half of Spartan Ops Season 1, which features brand new stories, missions and locations." 343 released a schedule for the new episodes, but keep in mind, the schedule is "not finalized and could very well change, but as of right now, here is what we're tentatively planning:
Week of 1/21
Spartan Ops Episode 6: Five new missions and an accompanying new CG cinematic.
"Forge Test" playlist (name not final): A rotational hopper featuring small Forge maps such as Relay. Help us test these maps by providing feedback and reporting bugs that will assist us in getting them ready for Matchmaking!
Specializations: Pioneer and Pathfinder Specializations unlocked for all players.
Week of 1/28
Spartan Ops Episode 7: Five new missions and an accompanying new CG cinematic.
Grifball playlist: A rotational hopper featuring everybody's favorite virtual sport. Catch the disease!
Specializations: Engineer and Stalker Specializations unlocked for all players.
Week of 2/4
Spartan Ops Episode 8: Five new missions and an accompanying new CG cinematic.
Team Doubles playlist: A rotational hopper for those of you that like action of the 2 vs 2 variety.
Specializations: Rogue and Tracker Specializations unlocked for all players."
We'll make sure to keep you updated if anything changes.