http://www.pentax.jp/japan/imaging/digital/slr/others.html
As we all have known, the K-7 has been replaced by the K-5..
But it is a bit to my surprise that the K-x has not yet officially been discontinued yet. Maybe it is still selling well! Or, reversely, there are just too many old K-x stocks sitting there so that Pentax dare not to formally announce its discontinuation~! ;-D