iPhoneX super retina display support

I note that Apple release new Policy that since July 2018, all iOS app must support the Super Retina display of iPhone X.


We are planning to update app to support iPhone X until July, but we don't clear the detail criteria of iPhone X support.

Could you please give me some information?

I have check this page, https://developer.apple.com/ios/update-apps-for-iphone-x/


and could you please tell me to support iPhoneX screen, is check the safe area on each Storyboard is "must"? I mean if I don't use safe area but only adjust the contents to let it show properly on iPhoneX is acceptable?