Higher resolution screen on the back would be nice, but really for a DSLR, it's pretty much "meh". Continuing with a good, reasonably color accurate screen (see Nikon D800 launch screen issues, I think that one was greenish) is more important. No matter what, historgram is a good tool to use to get what the exposure actually is, since the brightness can't easily reflect the actual exposure of the scene.
As for other predictions:
Newer core logic (CPU/etc) for the top cameras from both Nikon/Canon. Likely built-in Wifi throughout the line, except for maybe the top model(s) which, due to the all metal bodies, would have issues with it. A small bump in MPx for the top end cameras, although both companies will have a high MPx body somewhere near the top. Canon will continue to ignore small bits of very useful functionality that MagicLantern supports. Maybe 3 points AFMA, for wide to middle to zoom extrapolation for the top end camera. Oh, and Canon will keep the AFMA set ability out of the SDK for the top tier of cameras...still. Despite a bunch of us asking for it so FoCal can work 100% automated.