Sigh.....do you have more information to share with us that's more definitive?
Here's the direct quote, what part of any xbox anywhere is so difficult to understand?
Give your family access to your entire games library anytime, anywhere: Xbox One will enable new forms of access for families. Up to ten members of your family can log in and play from your shared games library on any Xbox One. Just like today, a family member can play your copy of Forza Motorsport at a friends house. Only now, they will see not just Forza, but all of your shared games. You can always play your games, and any one of your family members can be playing from your shared library at a given time.