The AIR packager was the first feature I utilized out of the gate. I had an app that I developed in Flash for my day job and I figured it’d be a great time to try it out. For those who have never published an Android app in Flash, when the user downloads and installs your app from Google Play, they must also download and install Adobe AIR before they can use your app. Now you have the option of packing AIR with your app to save your customers having to download two apps in order to use one. This of course comes at a price of an extra 9 megs or so of increase file size.
The spritehseet exporter can be useful if you plan on developing in JSON, Starling or Cocos2D. If you don’t plan on using those, you can create your own data format using JSFL, but I have no clue how to even begin to do that. As a CoronaSDK user, I’ll probably stick to Zwoptex or SpriteHelper, but it’s nice Flash included the spritesheet exporter.
Overall I think the CS6 upgrade is nice, but it’s nothing too crazy. Maybe my opinion will change once I get to really dive into the software, but initially I wasn’t wowed by anything I’ve seen.