At this point, the Master Chief Collection on PC is very close to completion. Halo Reach, Halo: Combat Evolved, Halo 2, Halo 3 and Halo 3: ODST are all out on PC and soon, Halo 4 will be joining that list, with beta tests kicking off today.
If you are a Halo Insider, then you will want to check your emails for an invite to the new Halo 4 PC flight, which begins today. The test includes campaign missions, Spartan Ops, Forge mode with additional features and cross-play multiplayer.
As for multiplayer, you can expect the usual social game modes like Team Deathmatch, Free for All and Infection. There will be certain schedule windows for competitive matches in certain modes, so Insiders will want to check Halo Waypoint for the latest details.
Flighting begins today and should continue for at least the next couple of weeks. If all goes well, Halo 4 will be on PC sometime next month or in early December.
KitGuru Says: Were any of you lucky enough to get an invite to the Halo 4 PC flight?