They've been working on a sequel for quite a while, including doing regular hours-long YouTube videos although I've never followed closely enough to get a feel for how far along they are or what their plans really are. Most of the posts are pretty abstract and the videos seem mostly like futzing with assets and tweaking melee modes and things.

Tangent: SC2 is possibly my favorite game of all time for different reasons. And honestly I liked Star Control Origins a whole lot, for anyone who hasn't played it but liked SC2. It's rough and dirivitive in some ways, but excellent in others, and improves on a lot of things in SC2 (including a bunch of quality-of-life stuff). And the writing and voice acting and things is pretty good. Actually, 3 of my favorite races come from the game.