Same boat as you guys, aside from the local sellers not having stocks yet, Im hesitant to buy because the issue, mainly the screen.
The cheapest way to produce an LCD is using a blue backlight which makes the entire display have a cool blue tint. This is what you see on most consumer displays (because it is cheapest).
To improve color accuracy on the blue backlight, a yellow phosphor is added to neutralize the blue. This is what apple does for the new retina displays. It doesn't provide 100% accurate color representation but it does produce a "white" that is closer to a true white. Inconsitencies in this phosphor are what can make certain displays look more yellow than others, or different parts of the screen even lookslightly more or less yellow.
Additionally, as the display ages, the backlight and phosphors will slightly dim and the result will be slightly different degrees of the "tint" on any particular display over time.
After looking at these in my local apple stores and in the one that I own, I *think* what most people are complaining about is that this screen is slightly yellow whereas most LCD displays they are used to which are very blue. However, it is a closer representation of the true color which is supposed to be displayed.
Apple has hired 3 different companies to produce the displays in the new ipad because of the sheer number of ipads they have to make in a product that they only produce for a year (when the next ipad will come out). There may be slight differences in the tint or appearance due to slight variations in the materials and process used, but every ipad should still fall into Apple's specifications and tolerances for a suitable display... differences that are only noticeable when you compare two different ipads rendering the same content side-by-side.
I wouldn't stay on the sidelines because of this "issue". If you look on any forum about televisions, computer monitors, or other LCD devices, you will see similar discussions about tinting of the display. This is simply a by-product of the way consumer LCDs are produced. If you google even for any other apple product with an lcd screen you will see complaints of screen tinting.. even the ipad 2.. Some people may prefer a blue tint and some may prefer a yellow tint or some may prefer blue just because that's what they are used to seeing, and maybe they compare their ipad to their computer monitor and their phone and it looks different so they assume it is the fault of the ipad.
With a componentized systems look your desktop computer or home theater you could drop a lot of extra money and get a slightly better display manufactured using a process that doesn't have either the yellow or blue tint, but unfortunately that's not an option here. There's one ipad model and that's what you get. It's still the best tablet on the market.
In reality, to most people, who just want to watch a video, browse the web, and play a game, it really doesn't make a damn bit of difference.