Took me long enough...but I finally have reason and motivation to do a project with AS3. And it is AIR that made that happen. I have 2 widget projects and 1 desktop application for different clients and all will be done in AIR which, of course, requires AS3.
I could do them as Flash projector files, and use something like my old friend SWF Studio from Northcode to round out the features. But AIR it is.
Clients have and still do hedge on Flash Player 9 because of penetration stats. So, they opt for Flash Player 8, which as of today still appears to be the dominant player overall. While FP9/AS3 has offered a variety of compelling reasons for its use to me as a developer, it hasn't been enough to motivate me to convince a client to go there.
There are a number of exhaustive migration articles and tutorials on moving to AS3. Shoot, books even. If, like me, you've been around since Flash4 and before, you'll probably skip the first half to 3/4 of most of these when they are covering what a timeline is and the basics of object oriented programming.
Here are some of my favorites:
Up next I'll post some of the challenges I had getting running and what I did to resolve them.