The iOS grapevine has been buzzing the last few days with news that the latest version of the Stanford iOS course has hit iTunes U. It is once again being taught by the excellent Paul Hegarty and has been updated not only for iOS 8 but will also use Swift.
This is an interesting if not totally surprising decision as Paul mentions in the first lecture that there simply was not time to teach both Swift and Objective-C. The first two videos are already posted and immediately dig into Swift including an introduction to Swift Optionals. So whatever your level of Swift expertise I think this will be well worth following along.
You can find it on iTunes U at Developing iOS 8 Apps with Swift