Now I own an X3 3.0d and I want to "upgrade" to X5, but the existing motors are under the competition (Porsche, Mercedes ML)

In 2008 BMW must bring new engines to the table, but I cannot find any informations o this..

Ex:
Diesel
3.0 SD or 4.5D (from 7 series)

Petrol
V10 5l (from M)

Any news ?