BMW has always said that there will never be a M version of the X3 or X5. Besides the motors would not work well in an X5 anyway. The new V10 may have 500hp but its at 8000rpm and it has no usable torque for a heavy vehicle. That is a race engine and would be stupid in a 5000lb suv. But the V12 from the 760il is very usable in an X5 and would make the X haul ass. Its got tons of torque everywhere.

What i heard is that the new 2007 X5 will be available in 3.0i and 3.0D, 4.8i from the curent 4.8 will replace the 4.4 as the base V8. and for the IS replacement they may go to an alpina 5.0 v8 motor or use the V12 from the 760 and call it a 6.0is. either the v8 or v12 will be putting out around 450hp And they will all only be offered in auto trans as usual.

__________________
Dinan M3

2006 X5 4.4i Sport Current Vehicle
2006 CLS 55 AMG Current Vehicle
2010 FORD F-450 King Ranch Current Vehicle
2012 GL 550 Current Vehicle

1999 M3 Dinan S3 SOLD
2001 M3 Dinan S2 SOLD
2002 M5 SOLD
2004 X5 4.4i sport SOLD
2007 335 XI Lease ended
2009 E92 M3 SOLD