I've spoken to an Apple sales person over the phone and was told that the yellow tint had to do with a bad batch of defective screens from the manufacturer. Something about the "chemicals" being used in the screens were bad. States that all new iMacs being shipped will be defect-free. So... 1) Apple is aware of the problem 2) Apple has found a solution to the problem 3) Apple claims that the new shipments will be yellow-tint free As far as the delays go, he wouldn't exactly say why, other than its a very popular model. I imagine that the retooling plays a part in the delay. Hopefully, we'll start hearing reports of the new iMacs being defect-free. Be sure to post if you get a good or bad screen over the next several weeks.