I think Fake Jay/Zoom got turned into Black Flash at the end of Flash season 2. Black Flash reappeared last night on Legends of Tomorrow to menace Eobard but he was all CGI.
Should we assume the actor who played Zoom (Teddy Sears) is coming back? I didn't quite like the revelation that Jay was Zoom but I like the actor.
I think Teddy is occupied with other projects but is open to returning.
But they can just CGI BLack Flash whenever they need it to appear.
However I like the fact that we have confirmation that Thawne is basically outrunning Black Flash and the fact that he is trying to stay ahead of his own impending oblivion. I suspect that when he leaves his partners he is going into the speed force to evade Black Flash and oblivion. He charges up with some speed force, then returns for a time.