Facebook will break on iOS9 unless we take action

Hello,

today I received an email by Facebook that our games will stop functioning in iOS 9 unless we take action (needless to say this is a nice announcement 1 week ahead of the release, given the Apple review process): https://developers.facebook.com/blog/post/2015/09/10/new-SDK-for-iOS9/

- What is not clear is, will we have to adapt these changes even if we are building against the iOS 8 SDK, or will apps using the iOS 8 SDK continue to work normally?

- Also I could not find any information which version of the iOS SDK is included in the latest Air SDK (18.0.0.199), where do I find this piece of information?

TIA

Ruben