The display should be the same as the previous model. I'm curious, what's so bad about it? I had a 2008 MBP that was 15" and had the same resolution as the current 13" MBA. I found it to be more than decent. Is it the color accuracy or brightness or what that makes it so bad? (genuinely curious, not defending it or anything, haven't really had the chance to thoroughly test it)
Just go to an Apple store and place a rMBP and a MBA side-by-side (ignore the different resolution). I've used Thinkpads with IPS panels for years (and Thinkpads generally don't get the best panels) and they were obviously much better. Furthermore the 1440 resolution is a little bit dated these days. But we'll see.
Maybe it's just first-world problems. I tend to get used to anything ;-) Overall i think that the update is well-balanced.