Mine is certainly sorted, 80x Sportline Plus ordered in September with a week 49 build date. Both my dealer and Motability confirmed an “upgrade” to an 85x around December 6th, my Motability account order page was also updated to show the 85x, no extra to pay as everything had been sorted between Skoda and Motability.
Please excuse spelling/typos. Apart from being a clot it turns out I had one on my cerebellum that's now causing various problems!