I imagine a lot of people here are looking forward to it and there is much to speculate about it. All we know is that it's in 2017 (a year after X-Men Apocalypse and Deadpool, but a year before Infinity War), and the main villain is someone named Cosmos. Here are a few polls about prediction and maybe preference.
I didn't include "I want him to win" because there is no way in Tartarus a family-friendly show would let the villain win.
Last one's more of a joke, as a reference to the love she didn't get in Season 3 but is certainly getting now with three episodes in a row