Not really...but pretty close! Check out Berend's article on CodeProject -
Generate Silverlight 2 DeepZoom image collection from multi-page tiff
I haven't tried it myself so I don't know if it works, but it definitely opens up a lot of possibilities - Dynamic gallery generation; Adding images to collection without regenerating all the tiles...
If only Microsoft would open source the DeepZoom Composer code, or at least the image/tile generation part!
Great work, Berend Engelbrecht!