Moff Gideon is now a prisoner...
and enter Grand Admiral Thrawn to headline as the villain in Season 3.
That's how I read it anyway.
I could be wrong.
He can still talk as a prisoner, and he's going to mess with his captors a while before he escapes and comes after them with a dreadnought. I mean, look what he did with his first ten minutes of captivity - got his two chief captors into a death feud! Imagine what he can do when he starts messing with his guards!
Screw Thrawn, I LOVE MOFF GIDEON!!! He's a fantastic character played by a terrific actor, the sort of delicious villain it's totally fun to hate.