watchOS 2 watch app with IOS 8 Support

If I have an app that already support watchOS 1, and then make an update to support iOS 8 and iOS 9 and watchOS 2 upon release. What happens to the users who have my app running on iOS 8 and watchOS 1 but update the app to the new version? Will the watch app still function as it previously did? Will it disappear from the watch until the user upgrades to iOS 9? Or do I need to create a watch app that supports iOS 8 and a watch app that supports iOS 9?

Supposedly you can create apps that have both Watch 1.0 and 2.0 targets.

Does anyone know of any info on how to do this? I can't seem to figure it out, and wondering if it's because I chose to allow Xcode to convert my current Watch target to watchOS 2.

If you can revert your code to before the conversion, then you can add watchOS 2 targets to your project by adding a new target: WatchOS>Application then click the Watchkit App option.

watchOS 2 watch app with IOS 8 Support
 
 
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