It just might be a while before we see it.
Here is the two tweet conversation:
CamandoSpawn @RovioMobile Is there any chance of Angry Birds on Windows Phone 7?
RovioMobile @CamandoSpawn yes, give us some months…
So yes it is coming – it is just going to take some time apparently.
Are you excited about this or is it just not a big deal by the time it hits WP7?