Last night we released a new version of Flash Player (10.1.82). This includes support for H.264 video decoding via the GPU on Mac OS X. Code named Gala, this was previously available as a beta on Adobe Labs. So don’t hang around; go and grab the update :D You can get both standard and debug versions of the installer from here.
If you’re a developer and want to know more about the security updates in this release you can read more here.