Very cool think popped in my RSS reader this morning. Scott Guthrie (now a corp VP, congrats Scott) put up a first look post at Silverlight 2. Not just a 'here's what is coming' but an 8-part tutorial as well as he built a sample application trying to leverage and demonstrate various parts of Silverlight 2.
These tutorials should be extremely helpful for those wanting to understand some of the newer concepts brought to Silverlight. If you haven't done a lot (or any) WPF coding before, some of this should jumpstart your knowledge a bit.
take a look at 'First Look at Silverlight 2.'