Just back from the 100 mile round trip to my closest Apple store, and I'm sorry to say it's empty handed. I took my launch day "white screen" one (that's my Mum's birthday present) as my point of reference. The Apple store chap who was dealing with me agreed my returned one had a yellow tint compared to my reference one, then we tried 2 more and they were exactly the same. I said I didn't want him to go through his entire stock, so I took a refund instead. Now I'm iPadless and am facing with a lottery of ordering online with a 1-2 week lead-time, fully expecting to get another yellow tinted one. Someone at Apple needs to admit the issue, and perhaps say it resolves itself after 2+ weeks or something.
Really don't know what to do now.
I think you should've kept it and brought it home. heres why.
Preordered a 32gig white, it came, i used it for about 5 days, loved evrything about it but the size.
went into the store, bought a 64 gig white, came home, turned it on and it had a nasty yellow hue to it.. like the whites were off, kinda yellowy, it wasn't as bright as the 32 either when i had both side by side turned on.
heres how i tested to see if i was just being anal / biased:
I restored the new 64gig ipad so that it looks exactly like my 32gig.
Asked the GF to swap em around and so i won't know whats what, i could definitely 10 for 10 times tell you which one was the 32, and which one was the 64 simply by looking at wallpapers, safari etc.
i threw the 64gig on 100% brightness, on a white blank pic, into my macbook neoprene sleeve for a few hours.
took it out, left it on all night like that while charging.
woke up, did the test again, and the one i always picked or prefered, surprisingly was the 64gig over teh 32. the screen is now better than my 32.
sorry for the long post, I read people complaining about not taking full scientific calibrated tests and what not, I'm just saying, taking bias out of the experiment, I did the screen burn thing and it changed the screen enough for me to pick it over my other one unknowingly. YMMV.