Hi Shellie,
I placed a “build to order” with dealer first week of December and was told lead time will be 3 to 4 months.
Regarding APs, my sense is that current Q4 prices are relatively low, (£1,999 for B4 Pro Plus, whereas the “natural competitors” seem to be in range £3K to £4K) so just a guess but believe more likely to rise than fall in Q1 ..