from auto-polar.com
"PF04 – PolarFIS MK5/6/8P (new hardware revision)
We are happy to announce a new hardware revision of our current product PolarFIS Advanced [PF03]. The new product name will be PolarFIS MK5/6/8P [PF04]."
Meaning new version of PF03 now called PolarFIS MK5/6/8P [PF04], but still for the same cars.
"This new revision contains some important improvements and fixments for continue giving long support to this product, and will be used as “base” for the new PolarFIS MQB that will be released in the next weeks."
Meaning PolarFIS for MQB cars is an entirely new product that will be out in the next few weeks. And is based on the new hardware they have come up with.
So you're right in that there is no PolarFIS for MQB at the moment but there is a new revision (PF04 replacing PF03) currently available to order for the MK5 etc. vehicles.