And the interface hasnt changed that much so I guess its still a pretty easy to use program. But I know that when I was just new to sound editors, I liked cool edit more then others because it was so simple to use. I used cool edit pro for years so I cant really judge if this new(er) version of cool edit is easy to use.
I know this was possible with cool edit 2 too yes but this was something you had to get separately, now its already in it.
But there are also some little extras like burning cds inside Audition, now you dont have to export them 1st and load them into lets say nero to burn your mixdown you just finished. This is if you ask me the most important upgrade. Something that made me use this program more(then the older version) is that your now able to use VST plug-ins with it.