With the first title to take advantage of the feature being Psyonix's Rocket League. For those that need a refresher in the whole cross-network play deal, its essentially the thing where console and PC games can play the same games online, together, regardless of platform. A quasi gaming utopia where it doesn't matter what box you own. This new update to the Xbox One will allow all developers to add this support to their games, including indie titles.
As to why it took Microsoft, whose Windows 10 operating system powers both the Xbox One and most gaming PCs, this long to implement this feature is anyone's guess. Plus, the whole cross-platform thing can already be seen on PlayStation 4 with titles like the aforementioned Rocket League and the recently released Street Fighter V. In fact the whole thing feels long overdue. But, better late than never. The best part though is that it won't be restricted to Windows 10 Store games, this new cross-play feature will support "other console and PC networks."
And by saying other console does Microsoft mean PlayStation 4? Well, that's a given. Here's hoping the Rocket League update will allow for cross-play between PC, PS4, and Xbox One players. Wouldn't that be something.