By now we know a lot of specs from the brand-new Nikon D80 - mainly the things inherited from the professional D200: a faster and much better image processor and a 11-point autofocus.
Also great is the far better and more dynamic Ä°SO control.

Owners of earlier Nikon DSLRs may notice the different memory cards: sell your Compact Flashes and start buying SD - preferably the high speed versions, not slowing down the camera speed. Ah, a new battery again… Pity.

However, there is a lot of good news, including a far better kit lens on its way!
Read all about the D80 in a 30 page review, answering all your questions at Dpreview.