Thanks for the additional links, guys.
Erl, I agree with your statement that the blog post about the D3 is a really good read. I personally think the same way as the author does, that's why I'm not griping about AF and FPS, though I understand people who gripe because they need them for their type of photography/work. And yes, I still find myself convincing myself that I still don't need the D300 (which I really want more than the D3 - too much camera for me). It helps that I don't have the funds to actually buy the D300 anyway!
Matjazz, thanks for the D300 link. I'd be happy if that sensor trickled down to the K10D upgrade. It'll really make me consider upgrading. While I'm happy from the improvement I got from my old 300D's ISO 1600 to the K10D's 1600, it still could be better. And having a very usable ISO 3200 and usable (for basic prints) ISO 6400 would be a big boon for me. I take a lot of pictures in low-light, and would also want a quick set-up, without a need to use a tripod or be able to use faster shutter speeds.