Well, sort of. For what it's worth, the ending of what turned out to be Part 1 would've still be been a proper, satisfying ending that wrapped up the main story even if the sequel series hadn't been announced. Like a self-contained movie that hits you with a sneaky post-credits sequel-hook. Literally nothing is known about Part 2 though. When it'll start, any kind of plot details, it's all a mystery for now.