Swift2

I just heard about Swift2 being introduced at the WWDC 2015.

 It's open sourced as well. As well,  the individual Apple developer accounts (Mac, iOS, and WatchOS) are being merged into one.

https://developer.apple.com/videos/wwdc/2015/?id=106

http://techxpatspodcast.com/2015/06/11/035-wwdc15-keynote-roundup/

http://www.appcoda.com/tag/swift2/  intro

http://www.hackingwithswift.com/swift2

http://natashatherobot.com/swift-2-error-handling/

http://www.sunsetlakesoftware.com/2015/06/12/swift-2-error-handling-practice

http://www.macworld.co.uk/how-to/mac/how-get-started-with-apple-swift-programming-3523633/

http://jamesonquave.com/blog/swift-2-whats-new/