Originally posted by Adam Well, that's probably because the two are so similar
The Q10 just has a different body and modified NR processing / firmware.
By reding the Ricoh forum on DPReview, I was under the impression that Ricoh (before buying Pentax) frequently improved and updated the firmware of their cameras, even if they'd been discontinued and were no longer available to buy new.
Maybe Ricoh camera owners can confirm with first-hand experience.
I think that firmware improvement policy is now being applied to Pentax branded products. And I think it is a great confidence and loyalty building policy.
Cheers,