iPhone 6

Apple today seeded to developers the very first iOS 8.3 beta, as well as a beta for Xcode 6.3 with the version 1.2 of the Swift programming language. Amusingly, this first release of the iOS 8.3 beta comes just a week after the fifth 8.2 beta — a version of the OS that has yet to see public release.

While iOS 8.2 will include the WatchKit SDK that developers are using to build apps for the Apple Watch due out in April, we don't have many indications as to what might be in version 8.3 or when we'll see a public release.

Source: Apple