You say they are supposed to be 6500K, but based on this thread, many are not. Just from today, 2 posts are from people who actually verified the calibration and they were at ~6300-6400K.How will playing the screen lottery help? Every user reports a yellow cast or warmer display when compared to previous models to some extent, so unless Apple changes supplier somewhere down the line you’ll keep getting equal or worse displays I’m afraid.
On top of that the displays are supposed to be 6500K, correct me if I’m wrong but that’s warmer than any of the previous models, let alone an X 3 years old. Which is why a lot of people, like myself, have freaked out about it.
I’m not saying the screens are spot on by any means, but keep in mind it’s difficult to tell without the right tools. All I’m saying is at this point you’re only wasting time requesting replacements, because they’ll be no better. If you’re completely dissatisfied, return is your only option.
Maybe this’ll change by January, but given the amount of users here being unsuccessful getting a display same as last year’s, or even seeing one at an Apple Store, I think it’s unlikely this’ll be the case.
Don’t think it is normal, it is not. Don’t settle.