It seems that due to the release of the iPod nano (PRODUCT) RED last week, September's rumors of other Apple products going the RED route are circulating again. Think Secret has a few 'sources' reporting that Apple and Bono have been kicking around the idea of RED iMacs and MacBooks, though their fate is probably very dependent on the success of the iPod nano (PRODUCT) RED (man, I really wish I didn't have to type all that). Unfortunately, Think Secret doesn't have even speculation as to how soon we could see other RED Apple products, or even if they could land before the holiday season. Guess you'll just have to play your cards right until we hear more.
AppleiMac 27-inch with Retina 5K display (late 2014)