I think it's nice, more linear than the current 5-series although I think the current series have the best back lights/tail-part of all series except E92.
For me it looks like this new model brings the 5- and 3-series closer together again. Current 5-series is more distinct from current 3-series..
I bet it drives great also! I'll stick to my 335 for a while because I love it...and besides...I can't afford to buy new cars when ever I feel to...