The Piazza and Liberation maps will kick off Modern Warfare 3's upcoming content season, coming out January 24 for Call of Duty Elite members on Xbox Live and some time after for other platforms. From a press release:

"Piazza is the idyllic Italian getaway that is anything but, where tight corners and branching pathways pose great risk at every turn. Close-range combat dominates in Piazza, where attacks from behind, above and below are an ever-constant threat.

"Liberation is a vast, militarized landscape, ripe for long-range sniper and LMG fire, with mounted turrets on either end that lend power to anyone brave enough to expose themselves in exchange for deadly firepower."

Check out our post on the upcoming content season for more details.