In our workshop we will be demoing/teaching some of this new driver tech. It is indeed a new driver for Piezo separate from QuadtoneRIP but built from the same family of code (Gutenprint) only an updated generation.
It is primarily for PiezoDN (digital negatives) although the initial work started for the SureColor P-series printers as QTR micro-lined until it was updated only a week ago with better microweaving for these printers.
all the best,
ps: Mac/Linux only at the moment.