Adobe AIR 2.0 will hog less memory and add multitouch support
I've run into a lot of people who choose not use AIR apps because of their memory-hogging tendencies, and the improved performance in AIR 2 - depending on how improved it is - might go a long way toward getting more people to adopt the framework. Meanwhile, folks whose machines support multitouch and gestures will start to see new apps that take advantage of zooming, rotating and more. Other less-flashy features include audio recording and opening files in their default applications.
My favorite assessment of AIR comes from Tweetie developer Loren Brichter: "AIR apps are like modern day Java applets ... sure, they run on every platform. But they also suck on every platform." Hopefully, AIR 2.0 will prove him wrong. A beta is coming later this year, with a full release in early 2010.