Originally Posted by RMabo 
Pentax has filed patents for a 16-135 lens, but it is unlikey to be only supersonic. If it has supersonic, it will surely have the screwdriven autofocus as well
That is fine as long as it is in the same price range as Nikons consumer 18-135mm zoom at about $250 since any increased cost of mechanical focus parts will be offset by the huge savings Pentax will get using Hoya glass compared to what Nikon pays.
This is exactly the type of added value Pentax can offer now if they'd like to compared to Nikon/Canon.