Seems there will also be an 18-disc ‘Skywalker Saga’ blu ray box set (and a 9-disc box set on dvd) - for the UK at least…
https://www.amazon.co.uk/dp/B082WXD4ZH & https://us.zavvi.com/blu-ray-and-dvd/the-rise-of-skywalker/box-sets.list
^ going on this article - https://thedigitalbits.com/columns/my-two-cents/121919-0930
I imagine there’ll also be an option in most other countries too… (or ‘on import’ for those that may prefer it IF it a UK-only thing)