Working on a new app not in the app store targeting iOS 8. We're building it with Swift 1.2, and am interested in migrating to Swift 2 to take advantage of some of the newer features of the language. However, we're hoping to release to the app store before Fall. Is Xcode 7 going to stay in beta until iOS 9 is released in the Fall, or is it likely to exit beta before then?
Will Xcode 7 exit beta before iOS 9 is released?
My crystal ball is in the shop, but if the past is any guide, there will be a GM release of Xcode 7 a week or two before the public release of iOS 9. Only then would app store submission be allowed using Xcode 7. This would allow you to have your iOS 9 compatible apps in the store by the public launch.
So the answer is most likely "not really" - it may be slightly before, but not soon enough for your purposes.
Didn't I see an Xcode 6.4 beta around here somewhere?
If your question is 'when can we submit using 'Swift 2.x'...I'd be tempted to uncouple that from any specific Xcode version and guess that will come around the time devs are allowed to submit native Watch apps.