Adobe Labs features prerelease versions of the Flash Player 9 Update software. The release candidate prerelease is an opportunity for developers and consumers to test and provide early feedback to Adobe on new features, enhancements, and compatibility with previously authored content.
This update, codenamed “Moviestar,” includes new features, enhancements and bug fixes for Windows, Macintosh, and Linux versions of Flash Player 9.
http://labs.adobe.com/technologies/flashplayer9/