There is not going to be a Studio 9, part my prediction and part based off of a survey that I completed for Adobe. Flash and Dreamweaver will be part of the CS software line up and the predicted Q1 2007 was also estimated on the same on the survey.
Really, who knows.. remember, it is Adobe. The survey that I took was back in April I think so things possibly have been changed. I do know that at one point I had read that Adobe blamed Apple for their slowness.. saying that Xcode was not capable of handling such a large application like PhotoShop.. yet Mathematica (not sure if that is the right name?) was okay? Either way, I have decided not to hold my breath.. would be nice to see someone try and compete with Adobe.