The recent Halo 4 Matchmaking update brings the addition of new maps created by Certain Affinity into existing playlists, as well as some other fixes and optimization. The maps that have been added were originally showcased in our Community Forge Test and FFA Forge Test playlists, and have since been updated to provide new experiences across multiple game modes. This list slightly differs from the information originally provided in the Halo Waypoint Bulletin - 343i are working with the below Forgers to ensure that the correct versions of their maps are showcased. 

 The following maps have been:

 Added to SWAT -

 Black Site by The Fated Fire
Plaza by Smexi Bilzo
Shutout by SaLoT and NLTROOO

 Added to Rumble Pit -

 Black Site by The Fated Fire
Simplex by SaLoT
Scythe by PA1NTS
Serenity by DG Intensity
Opus by SHIFTY time

 Removed from Rumble Pit - 

 Shutout by SaLoT and NLTROOO

 Added to Team Objective -

 Edifice by Redemption1271 (KoTH)
Serenity by DG Intensity (KoTH)
Station 9 by SaLoT (Extraction) 

 Added to Infinity Slayer -

 Opus by SHIFTY time
Simplex by SaLoT
Scythe by PA1NTS
Shutout by SaLoT

 Added to Flood -

 Black Site by The Fated Fire
Malice by AgentPaperCraft
Serenity by DG Intensity

 Team Snipers -

 Shutout has now been updated with improved respawn points for Team Snipers.

 343i have decided to remove Shutout (a remake of Halo 2’s Lockout) from the Rumble Pit playlist due to how this version of the map flows in Halo 4. An updated version of Shutout will be placed into SWAT, Team Snipers and Infinity Slayer. Additionally, Simplex will be updated to the Team Throwdown version across all playlists with the exception of Action Sack, as Lightning Flag plays best on the prior version of Simplex due to lines of sight and other factors. 

 Other Matchmaking updates this week include removing the Grunt Birthday effect from Fiesta Classic in the Action Sack playlist, as well as fixing the suicide respawn point on the map Settler. Lastly, 343i updated several of the Grifball settings to reflect the correct community settings in regards to Base Player Damage, Grif Damage Resistance, Grif Shield Multiplier and Suicide Penalty.

 With these adjustments being added i'm sure this will make Halo 4 MM run a whole lot smoother for Spartans alike. Enjoy.