What's in iOS 9 for C# Developers?

At the Apple Worldwide Developer Conference in September, the company introduced the first public beta of iOS 9 (as well as the first beta of OS X El Capitan). Xamarin got access to beta copies of iOS 9 at the same time as every other company, but almost immediately, Xamarin followed up the Apple announcements by making available Xamarin.iOS 9 and Xamarin Studio 6, which adds iOS 9 support.