How to use Project My Screen??

Miracast on the 1520 and Icon needs a firmware update first. The USB version requires an app on your PC, which as far as I know hasn't been released yet.
 
I would like to know how this is done too. Do you know of any information regarding this app?
 
Me as well. It doesn't seem to be supported quite yet, but I can't find verification anywhere of this, so I can't tell if it is simply incredibly glitchy