Finally Linux beta version is here... your wait is over ;)
From the site:
This is a prerelease version of the Adobe Flash Player 9 Update software for various platforms. It is being made available for developers and consumers to test their content to ensure existing content plays back correctly and that there are no compatibility issues.
The Flash Player beta is available in all languages; however, the beta installers are only in English and we can only accept feedback in English at this time. Flash Player beta downloads are now available for the Microsoft Windows Vista and Linux platforms.