Chris Avis brings us the next installment of our series with a look at Windows 8 Apps, the end-user experience, and thoughts for administrators for locking down the upgrades and updates.  He writes "Windows 8 gives us the awesome Windows Store where we can find and install Windows 8 applications that use the new Modern UI. It is pretty intuitive to find and install the applications. But I have had a few questions from folks about how to update and/or upgrade Windows 8 applications after they are installed.  One of the first things to consider is whether you as an Administrator will even allow access to the Windows Store by your end-users or if you will block it and only sideload LOB apps. If you decide to block access all together, this can be accomplished easily using Group Policy (for more information see – TechNet: Managing Client Access to the Windows Store).   If you grant access to the Windows Store, you should first plan out your update and upgrade strategy..."  Continue reading here:

http://blogs.technet.com/b/chrisavis/archive/2013/02/27/upgrading-and-updating-windows-8-application-part-18-of-19.aspx