I'm pretty sure that we won't be seeing a lot of in-depth tutorials on Swift for the rest of the year, so until then you can try and rely on these resources:

http://codecondo.com/communities-for-swift-developers/

http://codecondo.com/learn-swift-programming-for-ios-app-dev...

http://codecondo.com/the-complete-ios8-and-swift-course/

I hope it helps.