This is the supplement review by the IR for the K-5IIs:-
http://www.imaging-resource.com/PRODS/pentax-k5-iis/pentax-k5-iisA.HTM
The previous original IR review of the K-5II can be found below:-
http://www.imaging-resource.com/PRODS/pentax-k5-ii/pentax-k5-iiA.HTM
So, what are the differences, go figure out yourself!
Related:-
The Much Belated DPR K-5II/s Review