After EclipseCon I made some changes in my dynamic OSGI Vaadin demo, and I decided to put it on GitHub. You find it here: https://github.com/toedter/osgi-vaadin-demo
I added a progress indicator with polling (Thx Jani Laakso). Now starting and stopping bundles on the server will automatically be reflected in the client. I will talk about the demo at the JAX conference next week.
CU at JAX 2012!