As a user of Audition 3.0 I find it a real pain to have to log into the website to download the latest minor update to fix security or stability issues. When any other Adobe programe has some sort of auto updater, I'd like to see something similar to this in Audition 4.0. I would be happy if this was updated using the Mac App store when it's released but if this is the case 64bit support would have made more sense.
This version of Audition will probably have the standard Adobe Updater when it is released. We didn't include it in the Public Beta because it would be considered "bloat" as we probably won't do updates for a Beta.
As far as the Mac App store, while I cannot say for sure, I believe there's a number of things that might prevent this from being posted there.
Engadget has an article I read once that explores these possibilities: