If you have nothing to compare it to ala an iPad 2 or an iPhone 4/4S you won't notice..
What'd I'd like to know/see is if anyone with a new iPad has similar hue/color/blue/cool screen. This yellow tint could just be the norm for ALL new iPads.
Unfortunately you're correct. I first thought it was my imagination-looking at the home screen. Then I did a side by side photo comparison of a picture of my grandsons sitting in a field of bluebonnets, and my iPad 2 is cooler and the new iPad is yellowish. Turning off auto brightness helps mute the yellow.
I have a second iPad that is finishing the restore from backup. I wonder if both new iPads will be the same.
In any event my eyes told me- this seems yellow and holding it side by side with the iPad 2 confirms it. So don't put them side by side if that will bug you.