This is the one for me! (salivating)
I've had a D700 on stand-by and held off having a fire sale because I was told by a Pentax service manager that the new Pentax flagship camera would match or exceed the D700 in terms of low light performance and so I'm really hyped about this one. Because it means, saving thousands of dollars and months of hassle as I'd have to sell off everything I own in order to start a new kit for work. However... if Pentax delivers(as promised), then I get to keep my beloved Pentax kit and step-up my game without all the hassles.
So should things pan out, replacing my K20's with K-5' will be a win win for me.
Oh and the wife is already pretty excited about the K-r as well. Though she did mention she'd miss the grip option she had with her K200D.
AND ISO 50... how about that!