The GestureBank will be rolling out new Affinity Service capabilities next. This is where it will start to really resonate.
By the way: IE is not supported in this beta (as it was previously); it will take a bit of effort to get a new IE port. This is because managed extensions are kind of a dead-end for IE. So the existing managed port will be discarded in favor of an (eventual) unmanaged one written from scratch. See this (techie) thread for more information: Create a Shell Extension Handler thumbnail extractor with .net?. In this thread you can think of the words Explorer, Shell, IE, IE6, IE7, and Excel as synonyms.