If you log onto Modern Warfare 3 right now, you will see new game modes and playlists mixing up the online shooting.
You will see new Community Playlists, which will take the most popular unique private match modes, and add them to the public playlists. You will also see some new playlists with Drop Zone, Hardcore HQ Ricochet, and Hardcore Ricochet.
In Drop Zone point streaks are disabled, but care packages are dropped every 15 seconds as long as the drop zone is occupied. Hardcore Headquarters has been added to the Hardcore Team Tactical playlist, and all hardcore modes have been converted to Ricochet, apparently as a response to team killing. You can find out more information about the new modes by clicking here.
And just in case you haven't read our Modern Warfare 3 review already, you can do that by clicking here.