At the end the "Event Loops, XSLT and XForms" section of Kurt's
latest newsletter he mentions using SVG as the principal language for
GUIs on the internet, which definitely strikes chord with what I've
been pitching. I'll be talking about using SVG to create Declarative
UIs at the XML DevCon later this week.

The word is out that the next MS OS will be using an XML based Vector
Graphics language to create its UI, and will render to DirectX, so
talking about using SVG to do the same for other platforms is the way
to go. It will definitely make cross platform UIs a whole lot easier
than the current HTML model. And don't get me going about XUL. It
is good, and can be used in this model, but it would need to be
rendered to SVG, not directly to the graphics API layer. This way
you could create your own UI elements, mix them with XUL, and have
them rendered down to the same language before going to the graphics
API.

DonXML