A new list of achievement of Crysis 3 , suggests that the release of a new dedicated to multiplayer DLC is now imminent. Apparently there will be 4 new maps and 2 new game modes.

The maps it will call Creek, Crossing, Ascent and Coastline and the gaming mode Frenzy and Team Possession. As regards the latter, in particular, we note the mention of a certain "flag" point ", simply put the flag in CLB, we think then that Team Possession is a variant of this mode.
Also in the DLC should appear a new weapon: the oar to a boat. We can assume this because the achievement trophy connected to it is called "Totally Oarsome", oar in Italian means Remus.
EA hasn't officially announced any DLC coming for 3 but recently Crysis developer Crytek's title, explained that there are big plans regarding additional content. We will keep you updated!