The Nikon D90 was just announced and this site already has a quick preview of it. Looks it has great low light/high ISO performance, which is what I\’ve been waiting for to trickle down to the lower-end models since the D3 came out. It\’s also the first SLR that can shoot HD video. You can play with the depth of field and selective focus just like on a professional video camera, plus you can use all lenses that\’re available like fisheyes and telephotos.
I\’ve had a D70 for 4 years now and I haven\’t felt the need to upgrade to any models Nikon\’s released since, but the D90 might be the one.