The Pentax roadmaps have to get at least 2 years old before the "upcoming now real soon next" lens appears. Then the map can get to about 4 years old before they pull it down in embarrassment. Teleconverter, anyone?
I think the Q lens system is pretty good right now. I'd like to see some more accessories in the ecosystem, such as allowing the SLR's GPS module to work on a Q body or a nice leather case that actually fits most of the lenses in the system, to carry them with the camera. Maybe if I could find some small ziploc bags, I could carry the lenses in a pocket.