Flash CS3 Features

I have been working in flash MX 2004 and flash 8. Now I need to upgrade for flash cs3, can anybody provide me some information about flash cs3, I mean practical information that come in while using flash cs3. So basically its different features which behave differently than flash 8 or previous versions while using it.

Any kind of information in perspective of using filters, action script or some new features.

Thanks !!