This is awesome news. Am so excited that I can't go to sleep now!
via Ted Patrick, Flash player's upcoming update is gonna allow caching the flex framework separately. The framework thus cached can be used across multiple applications. This is awesome news! Long ago, I submitted something in the same lines as a feature request for Flash player; And later I even discussed with a few friends about developing a service, which would host a UI framework which can be used by different applications, hence letting them share the same framework. And now the flash player is gonna allow that natively!
The details about how this is gonna be done is yet to be known, but am sure this is one powerful feature which is gonna drive up Flex adoption crazy!