Well, it is in the media everywhere, so nothing really new here: Flash Player 9 for Linux was just released. You can get it even as an rpm from the official download page.
The announcement has more information about the fixed bugs, the still existing problems – and about a possible future x86_64 version! Also, the fullscreen support is about to be added. Would be nice.
If you are a lazy user (like me) the official linux package redistributers of the flash player already ship the version 9.0 and provide various kinds of repositories for different distributions. This will keep you up2date for the future.
Go, get it!