Adobe has officially released Flash Player 10.2 for Mac and it's available for download now. However, Power PC Macs of old are no supported in this version.
One of the main new features of Flash Player 10.2 is Stage Video. Building on the H.264 hardware-accelerated decoding found in Flash Player 10.1, Stage Video brings faster and smoother HD video playback while using dramatically less processing power.
Adobe says testing on supported systems (Mac OS X 10.6.4 and later with integrated graphics cards such as the NVIDIA GeForce 9400M, GeForce 320M, and GeForce GT 330M --
