Still 12 for next gen? I couldnt out the info with a quick google search.... knowing that console players will finally get to experience 64 player BF that PC gamers have enjoyed for nearly 10 years now.... I'd expect a lot of COD converts this go around with BF4.
There has been little to no information about the multiplayer aspect of Ghosts. However, I do remember reading that there will be staged environmental destruction. You can't control all of the destruction of course, but at certain points in the game the map will alter itself.
.......100th time through a map with a dam.........."LOOKOUT GUYS THE DAMN IS ABOUT TO EXPLODE AND FLOOD THE MIDDLE OF THIS MAP FOR 30 SECONDS" wowwwwwwww that will get old haha, but then again cod players aren't use to this kinda stuff, so they might like it.
COD can't do 64 players or rather SHOULDN'T because games would definitely be over way faster. They would have to water down the kill streaks to stop campers from getting swarms, dogs or gunships with 32 players to kill.