Swift 3.0 or Swift 2.3 minimum system version requirement and is it deployed in iOS 7 [duplicate]

Question

Swift 3.0 is coming up with Xcode 8, what is the minimum iOS / OS X system version required to use Swift 3.0? Is that swift 3.0 support iOS 7 ?

Answer 1

Minimum OS X to run Xcode 8 which is compatible with Swift 3 is OS X 10.11.4 (OS X EL Capitan)

And I think Swift 3 does not support iOS 7

As you have minimum target in Xcode 8 is iOS 8.0

And as per App Store support measurement iOS 8 (11%) and iOS 9 (84%) better that you stop support for iOS 7 as per my opinion. iOS 10 is coming soon.