looks like more NR applied to the chroma noise (i think), not a bad idea, especially at the target market K-x is looking..sooner or later Pentax will give in to popular demand at least on some of their bodies.
imo k-7 is not inferior, just different..don't understand why it would upset any k-7 user, looking at the comments that followed..
will Pentax tweak the NR algorithm on the k-7? I'm indifferent about that, there's nothing about the k-x that is treading on the k-7's toes IMO, not in the high ISO noise department..at least to me..