Both have gone live as the second set of titles for May
METAL GEAR SOLID V: The Phantom Pain
https://www.microsoft.com/store/p/metal-gear-solid-v-the-phantom-pain/c253hwjp0l18?wa=wsignin1.0
VANQUISH
http://marketplace.xbox.com/en-us/Product/VANQUISH/66acd000-77fe-1000-9115-d80253450841
METAL GEAR SOLID V: The Phantom Pain
https://www.microsoft.com/store/p/metal-gear-solid-v-the-phantom-pain/c253hwjp0l18?wa=wsignin1.0
VANQUISH
http://marketplace.xbox.com/en-us/Product/VANQUISH/66acd000-77fe-1000-9115-d80253450841