The story I heard was that their factory was getting some major upgrades, which was causing their commercial stuff to be delayed quite a bit. Again it's what I heard, may not be the actual story.
You can still find PMP at some online shops. For instance Wideners have a very limited quantity of PMP 308 about 2 weeks ago. I bought 50 boxes which was probably about 5% of their total available. Not sure about 223 though.