some is inner change, some is external change
certain change different from d90 a lot, certain does not matters much...
it all depends what u want from the camera, and how much does it matters...

e.g. some ppl don like too many focus point (they want simple point, they easily choose the point themselves), so the matter of 11focus points & 39focus points makes no difference...
D7000 can go with Ai lenses, makes it more legacy-compatible than D90 (if u already hav or u will get old lens)
jz see from dpreview, check out those highlights...then see if those extras really matters for u....

btw...CMOS sensor is newer (although size same and cramp in more pixel), new processor (Expeed 2)
that provides stronger heart than d90

yet...the most matters is the user, not the tool

what about ur D60 then

good one....

hmm....i think i wanna try get bac a kit lens...