According to 9to5Mac:
Today, we also get a hint at what looks like updated 21-inch and 27-inch iMac models from the same SKUs.
Listed as “D7″ and “D8″ in the SKUs above, we see two refreshed models. They are presumably for the 21-inch and 27-inch variants that Apple currently sells. We have recently heard reports that Apple is planning to introduce new iMacs alongside what reports claimed were images of the refreshed iMacs’ internals.
Are you an iMac fan? I am happy with my MacBook and an external display, but some prefer the desktop experience you get with an iMac. It’ll be interesting to see what specifications the new iMacs have, and also if they will take on a slightly modified form factor. The question is, will you buy one?