A higher res screen will be nice, but what will take advantage of that? Will there be higher resolution streaming video for it? Will games be redone for the higher resolution capabilities? Will other apps be recoded to use the higher spec screen? Also, how will that affect battery life? Will the updated processor and GPU be efficient enough to mitigate the possible higher power draw for the screen?
As it is, some tablets have higher resolutions than some HD flat screens. I guess we'll find out these answers in the next couple of months.
Honeycomb was supposedly an unfinished OS, whereas ICS is supposed to be fantastic. If they do come out with another OS this year, I think it'll harm Android overall. Most manufacturers are already struggling to bring ICS to their devices.