Last I checked some were still listed on the Pentax Japan site.
Tom Reese wrote:
From: "P. J. Alling"
Subject: Re: Camera engineering (This is signifigant)
Pentax, at least Pentax USA had K mount lenses listed as current items
up
until a couple of years ago.
Ya, I suspect a few that couldn't update. No point in updating a mirror
lens
to A series, I suppose.
I believe that they continued to list them because they still had old stock.
Tom Reese
--
When you're worried or in doubt,
Run in circles, (scream and shout).