The MPOS for AX2012 R3 was released in beta in May2014 when AX2012 R3 was released. In the up-coming CU8 this will be out of Beta so it will be supported in production. If you are experimenting in the AX2012 R3 Demo VM you may want to know how to active the app if the device activation is reset. This is a quick walk through of that process.
Thanks Lachlan! This video sure came in handy today!