sure enough as i told the denver visual studio user group last night that the only reason i was still running visual studio 2008 beta 2 was because the silverlight tools had not been updated yet. check my email later...they are updated :-).
the silverlight tools for alpha have been updated to work with visual studio 2008 release version (now available). you can download the updated bits here.
i'm headed up to redmond for the silverlight firestarter event on thursday and maybe to heckle jesse a bit :-). if you are going to be in town, drop me a line (my number is on my contact page). i'm not sure what we are doing thursday night, but i'm sure it will involve something with my comrade jason.