The Arab parties are potential "kingmakers" in the coalition arithmetic. In particular, it was Mansour Abbas that made the "change government" (Lapid-Bennett) and if there's any chance of unseating Bibi again it'll come down to him. And to my knowledge he hasn't ruled out joining Bibi either, if there's a deal to be made.

A lot also depends on whether the Arab parties run together in the coming elections or not.