With pentax K-mount lens roadmap, pentax also published the 645 and Q roadmap, the 645 and Q roadmap suggests that the Pentax will continue its full support for both the 645 and Q.
The 645D roadmap contains 4 new lenses, one of the lenses (D-FA 90mm F2.8) is already announced
In pentax Q lens roadmap we can seeĀ telephoto zoom, wide angle prime, and telephto prime coming in 2012 / 2013
via pentaxforums