I would be very surprised if Apple were not one of the online retailers mentioned here.
The 7 titles will be available online on December 12 but it has not yet been confirmed if they will be offered in 4K HDR. The same 7 titles will be available one week later on December 19 on UHD Blu-ray – separately and as a box set.
https://www.flatpanelshd.com/news.ph...&id=1511190376