The latest version of NetNewsWire for iOS supports iPhone Duo, which is very much a novel iPhone with toolbars running up the side and all kinds of behavior.
How we did it: we didn’t do any work at all. We built the app using Xcode 27.1 and the default iOS SDK that comes with it, and that’s it.
Here’s the thing, though: we were already using standard controls — toolbars, navigation controllers, split views, etc.