Shipping estimates for new orders of 21.5-inch iMac models began slipping in Apple's online stores in many European countries such as the United Kingdom today, moving from 7-10 business days to 2-3 weeks. The changes have not yet propagated to stores for other regions.
Estimates for the 21.5-inch models had remained steady at 7-10 business days since just after they became available for sale late last year. Apple has also been quoting even longer estimates for the 27-inch models, which are reportedly seeing more significant issues with display production due to a new lamination process. Estimates for new 27-inch iMac orders remain at 3-4 weeks for the time being, essentially in line with their status since just after pre-orders went live.