The testing of the next generation BMW X5 (F15) moves from cold climate testing to track testing at Nurburgring. The F15 X5 is expected to weigh less than the current E70 X5 and ride on a modified version of the F10 5 series chassis. Expect both diesel and gasoline 6-cylinder and 8-cylinder engine options. The next generation BMW X5 (F15) will be unveiled in 2013 or early 2014.
Source: Bimmerpost