I have been looking for months as well and after seeing a comment on the Forum yesterday I went directly to them asking about the Thermals. I had a bit of an odd answer and not what I expected. The answer was
"
Thank you for your enquiry. In terms of your request it’s a little early in certain respects. Namely we haven't yet developed a sliding door window pod for both sides. In addition to this we haven't yet developed the tailgate version for the T6. “
All windows should be the same as a T5 so am a bit surprised that they have not developed a full curtain set yet?????