https://www.theverge.com/2017/10/21/16513804/apple-iphone-x-upgrade-program-members-loan-processing

Preorders for the iPhone X begin on October 27th, and supplies are expected to be limited. If you’re a member of the iPhone Upgrade Program, you might have a chance to streamline the ordering process when preorders begin.

Apple announced that members of the program can get a head start on the ordering process on Monday, October 23rd. The banner points members to the Apple Store app so that they “can speed through checkout on 10.27.”