Would they replace the 3.0si engine with that TT inline 6 altogether because otherwise I don't see there being that many variants at the current price points. Or they could keep the current 3.0si and forego the TT inline 6 completely for the X5.

3.0si
3.0sd
4.4(tt)
4.8i

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'08 X5 3.0si - Alpine White / Saddle Brown interior
Specs: Sport Pkg, Premium Pkg, Tech Pkg, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS
Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights
Coded: Digital speedo, windows/sunroof/tailgate close via keyfob

X5 pics at Flickr