Here is a recap of the changes Bungie has made to the Xbox Live Matchmaking Playlist  

Multi-team:

• Hammerzeit game variant has been added
• The frequency of VIP gametypes has been reduced
• Swords gametypes will now be to 25 kills, rather than 50

Lone Wolves:

• Player count has been increased to 6 players
• Swords gametype has been added
• Oddball games on Snowbound and Epitaph have been reduced considerably

Team Slayer:

• Guardian has been added to the playlist
• Valhalla has been added to Team Slayer

Social Skirmish

• Flag gametypes will now appear more regularly

Rumble Pit

• Added both Construct and Isolation to several gametypes

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