Are you sure about that? This seems to say exactly the opposite.

In fact, WOA only supports running code that has been distributed through Windows Update along with the full spectrum of Windows Store applications.

WOA PCs will be serviced only through Windows or Microsoft Update, and consumer apps will only come from the Windows Store, so you never have to worry if a program will run because you are not downloading or installing from a DVD outside of the store experience. A WOA PC will feel like a consumer electronics device in terms of how it is used and managed.