The roadmap for the next hardfork after the upcoming one hasn't been set yet (neither feature set or estimated release date have been discussed). So I'm not yet sure how many hardforks we will have this year. Realistically, I would expect there will just be one or two more hardforks this year after the upcoming one, as we've almost hit the half way point for the year already.

At this moment, I would expect SMTs to be released this year. But we haven't done any review yet of the current state of the SMT code (in terms of functionality, performance, code quality, etc), so it's a bit early to be certain about the timing.