Comicbook.com recently had an interview with Dean Israelite, the director of the Lionsgate Power Rangers film about the potential villain for the sequel.  According to Israelite, he is planning to have Lord Zedd as the main villain.
“Well Lord Zedd is the obvious choice, I think, in a good way. Ya know, there was a time when we were talking about Lord Zedd being in this movie. And it just felt like we didn’t have the real estate for it and I didn’t want to dilute our villains. So we kind of went all in on Rita.”
“And so I think definitely it would all expanding into the next volume I definitely think have to feature Lord Zedd. I mean that’s not set in stone but I think that’s the obvious, sort of, next step to it.”
No other details are confirmed at this time so stay tuned for updates.
Source: Comicbook.com