The new Nikon D50 contains 90% of the features of the D70 in a slightly smaller form factor with a slightly less fancy lens for $900 and will ship in June.
On the other hand, the D70 includes all the features of the D70, is shipping right now, and, after rebate (and from the right dealer), costs around $900.
So that’s a little odd.
(They’re clearing out D70s to make way for D70s‘s, which also come out in June, and are about 10% better than the D70 — for around $1200.)