So what's planned for 10.9 I ask?

Well not much...

Except that Flash Profesional CS5 will enable you to build applications for iPhone and iPod touch using ActionScript 3 !!!

These applications can be delivered to iPhone and iPod touch users through the Apple App Store.

A public beta of Flash Professional CS5 with prerelease support for building applications for iPhone is planned for later this year.

Excellent fix for the Open Screen vs Apple problem from Adobe!

Vali can't wait to see that iPhone tab in the Flash Publish Settings and hit that Export to App Store button :)

[Update 2 Dec 2009] Lee Brimelow shows a demo of Flash CS5 app creation with decent performance on a last gen device.