I saw these today at bmwtoday.de via auto-motor-und-sport.de
I think they are the best renderings of the f10 to date.
The pictures seem to be an altered f01 (7-series) because I see just as many similarities to an f01 as I see differences.
Plus the reason I think these are the best renderings is that the front bumper is basically identical to that leaked front bumper image we saw a little while back....