I've a simple question.
What are requirements for new app upload to latest AppStore?
I mean is it required to use latest Xcode 8 and also latest swift or is it possible to upload the new application running on swift 2.2 version using Xcode 8 or maybe with Xcode 7?
I'm curios if apple states informations like that somewhere.
Apple recommends you to build and submit to App store with latest SDK. However, it doesn't mean that it forces you to do that. In other words, you can use older SDK to compile you source code. For example, you can compile you app with XCode8 with Swift 3, but if you do with XCode7 and Swift 2.2, it's also fine. Have a look at this: https://developer.apple.com/library/content/qa/qa1806/_index.html