According to the site, Declassified's 4-versus-4 online multiplayer took priority in the team's focus. The game will still offer a similar Hostiles Mode, which pits players against waves of enemies, albeit live ones.
Call of Duty: Black Ops Declassified takes place between the first and second Black Ops games. Few other details have been given since Gamescom. The game is currently slated for a November release.