Thought i'd jump on.
I ordered on release day, 07/07/2021. First in Northamptonshire.
I too got December build for Feb delivery. Then on the 07/12/2021, my order went from status 112 to 105, then on 14/12/2021, it went to 111. My current build date is 14/04/2022. I've got a Production Number and build slot tho.
Be aware, pack deletes have started happening. Mine was showing as WiFi hotspot delete and HK delete until they rang Germany and sorted it out. They're saying this car isn't hit by the chip shortage tho so anything being removed will be retrofitted or added back before build.
UK Launch was due to release November 2021. It's now March 2022. I've been told everyone with build dates for April / June will be moved forward to build dates in March. South Africa have started getting theirs and it's a very similiar spec (RHD etc) so shouldn't be long for us now.
My spec:
https://configure.bmw.co.uk/en_GB/configid/kyfuh9v9