Drove the 2013 RR at Land Rover Experience today. Very impressive, considering it had 21 inch road tyres.
The interior is absolutely stunning, and the off-road behaviour is very good, most of the time you cannot even tell that you are driving off-road.
The v8 Supercharged is a beast though, very powerful, so one has to be careful with the loud pedal

Some clips, more being added: Driving the new Range Rover at LR Experience - YouTube
Some pics
Driving the 2013 Range Rover at LR Experience (1/7) - YouTube
Driving the 2013 Range Rover at LR Experience (2/7) - YouTube