http://bbs.kakaku.com/bbs/K0000152653/SortID=13971212/
(Japanese Excite English Translation Here)
This is quoted from a shop who claimed to learn from a Pentax staff. And yes, K-5 has been discontinued and it will still be available until the existing stocks run out.
Some people would then deny this rumour straight-forwardly by the logic that "There is not yet any replacement model announced that will come!" But the same thing did already happen for the K-r. So, it is actually possible!
But, if it is true, WHAT body now yet stays in the current Pentax K DSLR *lineup*? So, will there be only lenses under the *system*?! :-o
For these days, I just wonder what Ricoh are doing on Pentax, really.. >:-(
Related:-
K-5 Replacement Coming? (Continued)
K-5 Replacement Coming?