I tried contacting them about it the other day and I got a cookie-cutter reply and them telling me the release date.
This is the message I received when I originally contacted them:
Thanks for getting in touch about your pre-order Star Wars Episode IX: The Rise of Skywalker - Zavvi Exclusive 4K Ultra HD Steelbook.
Please accept my apologies for the delay in receiving your order.
Please be aware that release dates may be subject to change as our suppliers can sometimes push back release dates for various reasons and sometimes without warning. I am sorry to inform you that this is beyond our control, however as soon as we receive the stock from our suppliers we will send out your item/items.
The current release date we have for this item is Expected 09-11-2020.
You will receive an email confirming the dispatch of this once your order has been sent.
In the meantime, if there is anything else we can do for you then please let us know and we will be happy to help.
Thanks,
Graham.
Zavvi Team
I've messaged them again. I am sick to death of this sh*tty company.