I just don't get this.
WA didn't choose to bring out CS6. You purchased extensions to work on your existing version of Dreamweaver.
If WA have to spend man hours to make the extensions compliant with new releases that are beyond their control, then we should just be grateful for any upgrades that come along. In my mind they should actually charge for upgrades that are required because Adobe bring out a new release.
Did you also moan to Adobe that you had to pay oodles of cash to upgrade? Or is it just WA that take the beating? (Probably because they are far too good to us to begin with!)
I've upgraded to both DB and DE. I owned all the extensions anyway, but there is a big improvement in stability and its my way of saying thank you to WA for making my life so much easier!