I followed: http://wiki.cloudbase.it/maas and now have a win2012r2std boot image available in my MAAS cluster.
Viewing the cluster boot image list I only see the INSTALL image whereas Ubuntu Trusty has COMMISIONING, XINSTALL and INSTALL images.
In the MAAS node edit screen I see options to select "Windows" as the OS and "Most recent release" as the Release. However when I commission the node it uses Ubuntu trusty.
How do I commission a win2012r2 node in MAAS?