This is not happening.
The next Xbox won't be a tablet. It won't be tablet-like either. You may be able to use a Windows 8 tablet (called slates) with the next Xbox, but the console itself won't utilize it as a major means of operating the console.
The whole intention of Kinect is to take a device out of the hands of a user, and give them an interface they can work with using both their hands or through speech. A slate would be an expensive, unnecessary device when you consider for a moment that even based on this rumor they'll be including the next version of Kinect with it.
It ain't gonna happen.







