Hints at new class? Maybe?

[Stanelis]

I recall hearing that Yoshi P said there'd be a hint at a new class coming up in 5.0 that wasn't Geomancer.

I m not sure Yoshida ever said that, but seeing that there were geomancers all over the new dungeon (complete with AF and bell), it should be your hint.

Also, the guy with the gunblade was more a reference to the imperial who summoned dalamud in 1.X.