From what I see, no. You get a completely superfluous start button (but no menu), an option to bypass the Start Screen at boot-up (which has existed in most replacement tools for ages), and some different sized icons in the start screen. Sure there's a few other tweaks and changes, but it's mostly more of the same.
Dan: I would, except that I just hate the themes in Windows 8. All 3D effects, rounded bits etc. have been stripped out and the desktop now looks blander than Windows 3.1 IMO. And without hacking around with the uxtheme dlls, it's not easy to fix. Don't get me wrong, 3D effects were probably taken too far in some places with Vista/Windows 7, but it seems as though everyone at Microsoft has been caught up in such a sudden anti skeuomorphism, anti 3D frenzy that they've gone way too far down the other end of the spectrum instead. Everything is now flat, lifeless, one-colour squares. And IMO it looks shit.
Hence I'm sticking with my nicer looking, easier to use Windows 7 for now. Maybe Windows 9 will fix things. Windows 8.1 sure hasn't!
EDITED: 19 Oct 2013 17:14 by DAVE!!