This looks interesting, I really like the sound of Mate and its built by some serious contributers in the Flash, Flex and ColdFusion world!

Mate is a tag-based, event-driven Flex framework.

Flex applications are event-driven. Mate framework has been created to make it easy to handle the events your Flex application creates. Mate allows you to define who is handling those events, whether data needs to be retrieved from the server, or other events need to be triggered.

I will defo be looking into this and will feedback initial thoughts :)