http://blogs.adobe.com/ashutosh/2009/04/adobe_air_on_linux_call_for_pr_1.html
'We've been working on new features for the next version of AIR (such as 64-bit binaries and .deb/.rpm installers for AIR), as well as on fixing bugs reported by users (reported via the Adobe Wish Form, via blog posts and on Twitter).
To iron out as many issues as possible before coming out with a public release, we'd like to invite users to help test pre-release builds...'