Is Deathstroke confirmed for anything at all or just that his live action debut is coming soon?

I'm a little lost right now. Ben releasing the video with no context doesn't make the situation any better. I'm game for him in the Batfleck film but toss Mister J in there too. Joker (while I loved Leto's portrayal) wasn't in SS enough as intended for me to be completely satisfied with his portrayal and I feel like he has to be apart of the Batfleck film to a certain extent. I guess we'll have to just wait and see.

Also do you guys think Slade Wilson could hold his own as the only villain in the Batman film or would it be better to have him team up with someone else?