I agree with Andy. The fact that a camera is about to be replaced is irrelevent, except that the prices of the older models may drop as a consequence, at least temporarily.
Often, the newer cameras are not a functionalimprovement relative to the older ones. They might look different, have a larger LCD, have more megapixels - which may do nothing other than increase noise - and offer funky menu choices. But the photos they capture are often about the same.
A classic example of inferior "newer" cameras is the case of the Fuji F50fd. This camera replaced the F31fd, doubled the megapixel count, IS, larger LCD, etc. What happened? The image quality and shot-to-shot times were worse, and the market for F30/F31D went thru the roof, with lingering new stock and factory refurbs selling for more than $300 - a lot more than the F50fd