Nate Cook covers all of the new NSCalendar additions that have been quietly sneaking into iOS since 8.0. There's a lot of new helpful methods here that developers should be aware of. Hopefully Apple will update the documentation soon, maybe once they have released the watch that likely drove these additions.
This library from Patryk Kaczmarek and netguru provides a way to upload and download assets from a server with minimal setup. There's two parts to the solution, a Ruby gem that provides the API end points and a library for iOS. The Ruby Carrierwave gem is solid, we use it 😄, and this looks like a great solution built on top of that.
Voice dictation in WatchKit was something I didn't think we'd see until the full native SDK was released. It turns out that's not the case and it's available already. Brian Gilham has the details on how this all works and it looks very simple.