During the final breakout session I attended, Rocking the web with ASP.NET, the last question asked by the attendees was whether the winform and the web worlds would totally converge, now that we have an abstracted user interface model. Scott Guthrie's response was that he didn't see this happening in the Whidbey timeframe, but he believes with the next version of VS (”Orcas,” from the future products timeline; not mentioned by name at the PDC to my knowledge) would allow for 3 user interface models. One would support fully rich user interfaces, and be the complete Longhorn/Avalon experience. One would allow for total ubiquity of platform for the client. And one would support “adaptive” rendering to the client. This should be relatively easy now that they have XAML/BAML. Point towards resources (images, movies, behaviors), and the client will figure out how it can best show those resources to the end user based on the specs of the machine it's running on. In conversations throughout the week, DonXML was speculating about the timeframe; it seemed a natural course, now that Microsoft has brought the User Interface into the XML world. Only time will tell; the popularity of Longhorn will determine how long those legacy platforms have to be supported.