An early version of Windows 10, Microsoft's new operating system, has leaked onto the internet, and in the process revealed plans for a new Xbox app for PC.

The Verge were first to uncover the leaked consumer build, finding that the new Xbox app acts as a gateway to the Xbox ecosystem. Achievements, a friends list, activity feeds and the Xbox Store are all available.

Elsewhere, the build reveals support for Cortana, a Siri-like program already available for Windows Phone. The Cortana character is lifted from the Halo universe.

The leak comes as Xbox boss Phil Spencer said Microsoft was now ready to divulge its plans for gaming on PC.

"It's time for us to talk about gaming on Windows," he said in a tweet discussing a Windows 10 event set to take place at Microsoft's Redmond headquarters in January 2015. Hopefully we can expect more solid confirmation on what this new Xbox App will offer to PC gamers, and hopefully it isn't just a glorified Xbox store front.