Just to say I've been using the new Q and finding it remarkably good.
Manufacturers should shout out more about their own accessories because the first question is how do we carry it. I've been struggling to find a suitable case that still keeps it pocketable. It's no use having a pocket sized camera that needs a bag with a shoulder strap and belt cases get in the way when driving a car.
I bought the 8.5mm and 5-15 mm lenses and the fish-eye is on its way. I then eventually bought on spec the "Pentax Neoprene Case Large for Q" and this fits the camera and standard zoom perfectly. An inexpesive Chinese ERC is also on the way, so we'll see if that's useful.
So why don't manufacturers tell us more readily about their bags and cases? They probably don't sell many, but that's because they don't tell anyone they exist and very few dealers stock them. I'd also like to see a "Pentax Speedbag Digital" by the way, but they haven't made that one yet.
Be careful about the ERCs out there though. We bought one for our Olympus XZ-1 and the tripod screw is in the wrong place. Superb case, but totally useless....