https://wccftech.com/microsofts-xcloud-service-to-end-ios-testing-samsung-partnership/

The state of Project xCloud on iOS and Apple Devices has been fairly limited. Initially limited to only testing Halo: The Master Chief Collection and only 10,000 total testers, most Apple users weren't able to experience the majority of Microsoft's signature cloud gaming service. Fans were left wondering what the status of Project xCloud would be on their mobile devices and Microsoft has finally answered that question: the Samsung partnership is their primary focus. In the meantime, the iOS testing for Project xCloud will be ending as of today.

In a statement issued to The Verge, a Microsoft spokesperson commented on the recent sunsetting of the Project xCloud testing on iOS devices. With their statement announcing the end of the iOS TestFlight, Microsoft makes it clear that the program will end in its current form on Apple devices but may return sometime after the testing period is complete. Initially, the iOS Test Flight was scheduled to run through September 11th but was shut down today, the same day as the Samsung Unpacked event and partnership announcements.