There's a feature here on the new menu system which looks a lot more streamlined and responsive than the mess in GT5
http://www.youtube.com/watch?v=nUuRbgVSR8I
Unfortunately not much more though because there's a review embargo in place until 8am Friday. Maybe just as well really because there's a day one patch (which will probably fix all manner of things).
One welcome addition is that you can actually upgrade your brakes this time which, in the real world is the first thing you should really consider before shovelling out more BHP!