2.0 to 3.0

Well, hello there :angel:

I’ve been getting back into Flash more heavily and have really only been exposed to 1.0 and 2.0 actionscript until now.

My question: is the CS3/3.0 actionscript completely remodeled to the point where I should stop relearning 2.0 methods and start from the ground up with 3.0 actionscripting? Or, is it simply a matter of a few new elements in addition to the older methods?

Danke!