I hope they don't get too crazy about reconstructing the new interface. I had some trouble jumping fron 4 to 5. Flash is a very demanding program that require you to know very well the interface in order to do things quickly, the thing with Flas is that is very easy to use every single tool.
I hope there is a vertion for OS 9 too, I'm not very crazy about OSX.
Looks like the new version of Flash is gonna be something. I just hope the time line measures in real time in place with only frames, that would help a lot.