I've spoken to Hyundai UK and a few dealers. They're all saying 12-14 weeks (although one said 6 months

). My dealership also said they often come in earlier than the quoted 12 weeks. However, the sales manager has said that supply is starting to slow down so it could be more and estimates my car to be November. I ordered in July.
There's supposedly a problem with the system at the minute too so there are no build dates showing on orders, but I'm not sure that's the entire story.
Imo, I think the chip supply is starting to slow things down for Hyundai so they're being a bit sheepish when asked for dates.
TLDR, everyone says 12 weeks. Early orders came sooner but now more orders come in I think 12 weeks or more is to be expected.