The 5 liter V8 will 367hp. What happened to the 5 liter V10? will that be with ///M badge.

"Power is expected to come from two revamped Diesel engines, a 3,0 litre six cylinder / 231 HP and a 4,5 litre V8 / 330 HP. And from fuel engines starting with a 3,0 litre six cylinder / 258 HP up to a new V8 5,0 litre / 367 HP.

The new X5’s release is scheduled for October 2006, an M-version could be in the pipeline for later on."