User blog comment:Capt. Miller/Treyarch Zombies Presentation Tomorrow/@comment-24756040-20150204220956/@comment-1916935-20150205021335

Well 3arc seems to be making each zombie map easier and easier, so I wouldn't be surprised to see the PPSH off the wall if it returns. And it's not like good wall weapons weren't available in WaW or BO, since the Thompson and MP40 are pretty solid weapons.