Sublime Text is still in development. We haven't sold out to atom.io, Jon hasn't died, there has been no hostile takeover by TextWrangler. We dropped back down to one developer earlier this year, and because that developer is also the director of the company, speed of updates was sacrificed in exchange for business planning, applying for a new payment platform and a vacation.
I've been floating around between editors for years now since I finally gave up on TextMate 1. Sublime has been the closest so far (Chocolat was damn near perfect, but just a little too glitchy), but I've always been concerned that development would just cease one day.
I'm not sure this post has put my mind at rest.