No doubt in response to the growing threat to Flash from Silverlight (and a possible, maybe, vague, one day threat from JavaFX, which Sun plan to push at JavaOne in a few days), Adobe has been slowly opening up Flash over the last year. One area that remained completely verboten though was 3rd party players. Creating something that could render a SWF was strictly against the rules. The Open Screen Project though appears to relax these rules as of Flash 10. Adobe are publishing the details of the porting layer APIs and are removing the royalties involved in using Flash on anything but desktop machines.
This means we might finally see Flash 10 and Flex on Windows CE, the iPhone, Symbian OS phones etc, without havign to wait for Adobe to deliver it. We might even – fingers crossed – see the death of the awful Flash Lite.