I knew there was some churn in the Swift language but didn't think it was going to continue. I'm not using Swift now but will likely hold off a bit longer as a result. I did think they nailed the open source launch. Swift on the server is an exciting prospect, more competition is always good. While I'm not a Swift dev yet (I don't have a Mac thus mainly interested in the libre crossplatform launch), I've been keeping my eye on it with Swift Weekly.

I think 2016-2017 could well be the year(s) of Swift's ascension.