1. Create new Seam web project (WAR). Select JBoss AS 4.2 as target server.
2. See Servers View. New project is not deployed. There is only -ds.xml which is deployed.

I don't know when and what was changed. I can reproduce in trunk and in jbdevstudio-win32-2.0.0.GA-R200903031802-H10.jar build.