Well, the cat's out of the bag! Pentax has released a fix for one of their newest cameras, the K-7 DSLR, within the same month of its US release. And as speculated, the first firmware update for the K-7 addresses the highly contentious default behaviour of the 4-way controller for some of those users frustrated by having to press the OK button to allow the controller to move the AF point.
Added a custom function to the K-7's Custom Function menu that affects the behavior of the 4-way controller when using user-selectable focus point adjustment.
For Windows (Download zip from www.pentaximaging.com)
Mac (Download zip from www.pentaximaging.com)
(Via DPReview Forums)