It's over, Adobe drops AIR for the Linux platform.
Even though I can understand why, for me this is "the straw that broke the camel's back".
I think "cross platform" in general has been a pipe-dream. It's time to realize that if you want to create good software for multiple platforms, you will have to go native. They say the focus is now on Android and other mobile platforms. It sounds great but in reality the Android AIR runtime isn't all that great, and probably never will be. The hope of having a single codebase that will run on multiple platforms with minimal effort just doesn't exist.