What it will do:
 
 - Give a nice easy GObject based API for creating fast, mainly 2D
   single window stylalised applications such as media box UI's, 
   presentaions, kiosk style apps etc.
   
 - If you've ever used Director, thats the kind of functionality, 
   clutter aims for. 

What it wont do:

 - Provide a general interface to all openGL functionality