To be fair, WA do a great job in providing the updates for free.
They are under no obligation to provide free updates just so that they work with a new release of Dreamweaver. You purchased the extensions in the knowledge that they worked with your current version of Dreamweaver. Of course its in WA's best interests to make sure they work with the current version for future sales but we are fortunate that their policy is that as an owner of the extension that we purchased for a previous version of Dreamweaver we get the update for free.
I can understand your frustration, Dave, being an early adopter of CS6. I've purchased the upgrade and installed it on my test machine but there is no way on this earth I would install it on my main bread earning machine for at least 6 months, or until I was confident that my day to day business would go uninterrupted.