Yep, and the 40d price has fallen again! $1349 from d-d with a tax invoice.
http://www.d-d-photographics.com/canon40d.htm
Even though I have heaps of Pentax glass, it seems the 40d is just better value than the K20d, based on its' 14-bit D-A alone. That is, provided the 14-bit converter can take advantage of the very small CMOS cells. If it cannot, then 14-bit is just a marketing trick.
I'm sure I've seen a website, somewhere, that has a real world test of 12-bit vs 14-bit in Canon DSLRs eg 400d vs 40d...
<edit> Ah, here it is.. Christian Buil. Seems 14-bit is a genuine improvement...
http://www.astrosurf.com/buil/eos40d/test.htm
Cheers,
Rob