User blog comment:Argorrath/Treyarch posts a message of zombies; possibly hinting to a DLC 4/@comment-181.165.4.114-20130806190106/@comment-356904-20130806191833

Not really. Japan has an Emperor, so someone referring to them isn't indicative of a given character. Ditto for "motherland"; count how many times characters in the W@W campaign use it. "Scuttlebutt" is a bit of United States Marine Corps slang; it basically means "Water Cooler gossip". So that's not indicative either.