There will be a new section implemented on the store similar to indie section on Xbox 360
From Major Nelson
"Xbox One offers players a more curated store experience, so games from the Creators Program will appear in a new, distinct Creators games section in the Store. This gives the best of both worlds – the curated store experience console players know and expect, and the opportunities that a totally open store experience offers as well."
Xbox Game Pass is $9,99/£7,99 per month and those games can be played offline upto 30 days. It's definitely the superior version compared to PS Now that requires online only.
If you read the full article it provides you with a source
"Ruffian Games is looking for a Senior Engineer with generalised experience in action games to work on a multiplayer title being developed for Xbox One in Unreal Engine 4."
http://www.ruffiangames.com...