This is one of the items that was tested in your Windows 8 App when you use the WACK.

If you are in Southern California, please email this post for more information on getting a token for your app by June 30, 2012!

 

Expected to pass the Windows 8 App certification requirements.

The application excellence lab is not a replacement for the thorough testing and validation that happens during certification. Please carefully review the Windows store certification requirements and ensure that your application meets all the requirements.
During our review, we will go through some of the requirements, but not all of them.

Reference (HTML)

http://msdn.microsoft.com/en-us/library/windows/apps/hh694083.aspx

Reference (XAML)

http://msdn.microsoft.com/en-us/library/windows/apps/hh694083.aspx