Well, I wanted to check something in the XML standard real quick over at w3, and I came across a news entry for XBL 2.0 Working Draft (Yes, it's a draft, so that means don't go busting out implementations just yet ). As you can tell by the date, it came out fairly recently (about 4 days ago). So I thought, hey, it's a Friday, let's kick back and read some W3 docs (actually it was my brain collapsing trying to read the ECMA-262 standard...)! So I read on.
From what I can tell it appears to give you the ability to apply templates for nodes (I'm sure many people will love that), better event handling support, and what appears to a lingering element for preloaded data.
The template nodes appear to be considered as "shadow content", and are unavaliable to the DOM model. As templates I suppose that does make sense .
Preloaded data caught my attention, but it appears to be a "Hey, implement this if you want" type deal, and we all know how THAT goes !
So I'd say things are looking pretty interesting. However, as a draft we'll expect things to change, for better or for worse time will tell.