Xbox 360 Achievements has spotted some Xbox 360 Achievements for Crysis 3 that seem to indicate a new downlodable content pack.
The achievements list two game modes (Frenzy and Team Possession) and four maps (Ascent, Crossing, Creek and Coastline) that are not currently in the game.
Crysis 3 was released on the 19th February 2013 for PC, Xbox 360, and PlayStation 3, but was a sales disaster, and earned a 6.0/10 score in Strategy Informer’s review.