OK, here's the official response from PGM Support:

The 2016 styles are technically usable in the 2015 software. However generally the 2016 styles are going to need to reference a 2016 Realtracks which the customer would not have unless they had purchased them separately.

Even it is still a bit of a grey area as the new Xtra Styles Pak states on the website it requires the latest build for 2016.

I would suggest the customer upgrade the full software if he wishes to use the new styles. If he were to upgrade to an UltraPlusPAK, EverythingPAK or Audiophile Edition they would then have all the new styles and RealTracks would be included in the 2016 upgrade.


BIAB & RB2025 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones