With iPhone Duo, Apple Proved Its Secret Weapon Comes from Outside the Company (inc.com)

Developers have done some pretty impressive work on their apps for the new iPhone Duo—and fast. Samsung might be jealous.

I opened up the simulator on my app yesterday thinking it probably needed updates to get ahead of it.

To my surprise it worked automatically on the duo with no adjustments.

I think if you made an app recently in swift, and everything worked on iPhone and iPad already, it may be properly resized already, similar to how android handles scaling automatically.