I don't think this actually changes anything? Apple still bans under section 1 and I think 10.1 any app that don't have a consistent iOS look and feel and behavior. The requirement to only use native widgets is still enforced.

So, either the app developer gives the app a native user experience; Or the middleware developer makes it so that any app using his middleware is always conform the guidelines? As far as I can tell this still rules out any simple use of the simple and generic cross-platform middleware layers?