Eric Slivka for MacRumors writes:
While several observers have noted shortages of Apple’s current 27-inch iMac at resellers over the past several months, the tight supplies now appear to be increasingly affecting Apple’s own retail stores.
According to a survey of retail store stock availability through the “Personal Pickup” program at Apple’s 249 U.S. locations, each of the two standard 27-inch iMac configurations is currently out of stock at approximately half of all Apple retail stores.
We are still waiting on new iMacs with Intel’s Ivy Bridge processors, with the outside chance of a Retina display to boot. Apple is expected to refresh the iMac imminently, with some reports suggesting that the all-in-one desktop computer will be updated in October.