Welcome Michael + Jacob-
I was excited to see the Google Web Toolkit example in seam 2.1 but it was a limited effort and I felt more emphasis could be made to leverage the GWT framework.
Are there plans to further integrate seam with GWT or is seam going to be continue focus on JSF?
IMHO JSF has had it's heyday and there are UI widgets with more functionality out there.
The latest release of Seam has made major headway in supporting a variety of presentation layers by removing dependencies on JSF. Seam 2.1 now provides support for Wicket out of the box and as you mentioned GWT is supported. There continues to be effort in this area, so if you have something you would like to see, please post an issue in JIRA. That way it will get on the radar