Nah, I won't return in a meaningful way. Come June 30, I'm fully deleting my 10+ y.o. account. I may make another burner one to be able to follow a few niche communities (mostly snark subreddits) that I'm certain won't be moving over. But I don't plan to contribute or even lurk in a meaningful way anymore.
I'm excited about the promise the Fediverse holds. It's refreshing to me. I've been longing for a better social web experience, something like I remember having 10-15 years ago, and I'm feeling hopeful that the communities developing here can give me some of that magical feeling back.