I really didn"t want to bring my back, but seeing that there are still users getting iPad Pros with the yellow screen prompted me today to return mine both to see if I can get the color I really wanted and to see if I could get one that either wasn't as yellow or was the normal cooler blue.
I brought my good iPad as a comparison, but I think the flourescent lighting in the Apple Stores makes it hard to make a comparison in the store.
I think i did better this time, but the screen is still slightly yellow,
Here was my original iPad Pro alongside my iPad 3.
The iPad Pro I had was somewhat yellow overall.
We use standard incandescent light in out apartment. So, I think the camera is exaggerating the yellow tone more than what I was observing with my own eyes.
The replacement iPad Pro below. Looking at it with my own eyes looks much whiter in person next to my iPad 3.
I think the slight yellow in this image, again, is more exaggerated from the camera and room lighting, but it is much, much less yellow than my originally purchased iPad Pro.
In person, the display appears to be almost as white as my iPad 3.