It depends upon if the programmer (not Roy) for QTRGui is able to support new printers going forward or not (so far yes but there is some concern there). Also, if/when we can get the windows (a windows) version working [I]directly [/I]with ICCs.
That said, for those who buy PiezoDN and just want to manually convert to the ICCs, you are welcome. I can provide a .zip file with all the relevant stuff except the OS X bits. The workflow is not officially supported yet though.