Microsoft released an update in the Windows App Store for their Server Posterpedia App, including the new Hyper-V 2012 R2 posters and some design changes.
Server Posterpedia is an interactive app that uses technical posters as a reference for understanding Microsoft technologies. This app includes all the reference posters from different Microsoft Server Technologies such as Windows Server 2012 Hyper-V, Exchange or Windows Azure. The great thing about this App, you can not only checkout the different posters and zoom in, if you click on a specific topic for you get directly linked to the right TechNet article. This can help find some TechNet references really easy and fast.
Download the Posterpedia App in the Windows Store.