During the Photo Marketing Association annual show (PMA) in Las Vegas Jan 31 through Feb 2 two new low-end DSLRs of interest to real estate photographers were introduced. Canon introduced the EOS Rebel XSi and Nikon introduced the D60.
On the other hand it looks like the Rebel XSi many be worth waiting until it's April 15 availability if you are considering purchasing a low-end Canon DSLR. See the in depth review at PopPhoto.com.
As usual, I recommend that when purchasing a low end DSLR you purchase the body only option and purchase a lens that is more suitable for real estate photography than the typical 18-55m kit lenses that come bundled with low end DSLRs. See my Wide angle lens post for advice on what lenses are suitable for real estate photography.