Originally posted by Nowhere Matt I think a few of us would caution you on your apparent mindset. I mean no offense but perhaps you should wait quite a while before an upgrade. There may be some experience you should gain with the K-x before automatically upgrading.
+1 for the above. I bought an *ist DS in 2003. Its a 6 MP camera, but satisfies my every photographic need. I have no doubt in my mind the newer sensors, HDR and higher resolution will enhance my images, but a newer camera would't do much in way of improving my skill. That takes practice, and 12-13 years since picking up a film SLR, I still feel like a beginner.
Get a camera, understand its strengths and limitations, use it to the fullest potential until you feel consistently limited, then you will know what you need (often different from what you want)