Yeah. So true. Stop with the matte vs. glossy discussion already it's a dead end. Yes an option would be nice, but for a desktop display I don't really care.
What drivesme insane, though, is the different HEIGHT. According to the pictures on Apples website the 27" ACD "starts" lower than the 27" iMac does.
Sure, it doesn't matter for MBP or MacPro folks. But for folks who want to extend their iMac (and let's face it, performance-wise the i7 iMac entered workstation territory) this is just madness. I really hope the ACD on the page is rendered wrong (like the iPod touches with a Phone icon) or underwent a last minute change. I sure don't want to make up stupid reasons to customers as to why they are different. I foresee, though, that I will.
Previous iMacs did not line up with same size ACDs so I see no reason why this will be different. The reason they don't is because the cinema display would have a huge gap from the bottom of the stand and it would look awkward. If you want them to line up, Apple has a solution, it is called a vesa mount.