User blog comment:Damac1214/Black Ops II Map names leaked + Vonderhaar tweets a little bit about Weapon Leveling + Zombies Campaign apparently confirmed/@comment-76.194.241.173-20120917064318/@comment-66.75.48.85-20120917182833

Yes, there are grenade launchers, but no underbarrel ones. The only GL I've seen so far is the War Machine.