I agree that retina displays are not coming out now. I don't think OS X is ready for HiDPI mode and it's certain that third party apps are not ready. In fact if retina displays came out now I'd wait a while until software catches up. Non-retina assets will look terrible on a retina display.
Correct:
1 - OS X is NOT ready for large retina displays;
2 - Large retina displays are NOT available in an industrial scale/competitive prices;
3 - Macs sporting large retina displays are ONLY coming by mid-2013.