10 friends can share one game, that's awesome. I still don't get why we had to wait for interviews to know that. Third parties can choose not to allow sharing could be the reason, right? I have to admit, Xbone is a better product now than what it was one week ago.
Actually you can only share the game with ONE person at a time, and i believe there is a time limit as well, 30 days or something. I could be wrong about this last part ofc, since MS has had such a confusing PR mess.
The limit of people you can potentially share games to is limited to 10 users.
Compared to the status quo its not a feature at all, not even close.