I've managed to get everything downloaded now, by dint of being an early riser in Europe... The app download is actually 250MB+, not 40MB as Mark suggests above, and I think this is because most of the wizards and the huge number of models are bundled into the main install, so you can just open them straight from the browser. Not sure whether any of the models are new, but the presets are very nice and a great starting point. However it seems that most of the new content has ended up in the main install rather than on the Content CD... I'd still try to grab both files, though...