That's obvious since we already know all of the characters playable for the arcade release because of the pre-launch stream, but the question is if Adachi will follow what they did with Elizabeth, Labrys and Shadow Labrys and be added to the arcade version later on or if he'll actually be a console exclusive (if he's playable).
Edit: Oh wait, I thought by "release" you meant "launch." I see what you mean now. Well, we know at least Sho with a Persona will most probably be added to the arcade release. Given the interval of time of approximately seven months between the arcade release and console release, I wouldn't be surprised if more characters were added, though.