Big news, flash player 10 beta supports complex text layouts and namely support for RTL languages like Arabic! At last, more info here : http://labs.adobe.com/technologies/flashplayer10/demos/videos/text.html
There are many other features added like CPU surfacing and GPU compositing as well as enhanced drawing API and native 3D support yet the RTL support is something we’ve been waiting for long time, finally it has arrived! Thx Adobe, let’s hope it works as advertisied.