Usually the updates are power related. Updates on the website can be sporadic. Mark has done some of the work on the ZED site, and if he does the updates, SSA will have the same updates at the same time. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
Indeed, website doesn't update as often as it should. You should call the shop there and ask. Stephen or his wife generally answer normal business hours (pacific time). I know Leviathan is on 3rd revision so could very well be another revision to Draconia. That being said as far as listening, I doubt you'd hear the difference between versions.
Vertex as a ZED authorized dealer I can vouch that ZED is indeed coming/came out with a new Draconia III, they are also coming out with a Minotaur II. He has already started making them. I just don't think he has time to update his website and take pics. He's a one man show.