Mike Read, the producer of the game reveals in the video that Crysis 3 multiplayer will feature 12 maps and eight game modes. Additionally there will be over 30 new weapons and PC players will have a maximum player limit of 16 on each map; while console players will have 12.
The video also showcases Ceph Pinger, a giant mech that players can pilot and wreck havoc with. Players on the opposing team can shoot the pilot and then hijack the mech for themselves. I reckon this will happen at lot once the game is released.
Crysis 3 will release in February 2013 for the PS3, Xbox 360 and PC.