I would say expect most/all the E53 stuff, plus new bus systems, more modules, cameras, sensors, rear lift gate struts, air springs, adaptations to reset, etc.

You'll need a foxwell scan tool at least, or more likely ISTA for your level of DIY.

12 and 13 have the best option package structures, my vote is to hold out for option 456 Comfort Seats. Get a car with a cozy and well cared for ownership history.

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03 3.0 Alpine/Blk (sold) Sport, Prem, CWP, PDC, Xenon
10 35d Titanium/Blk - Sport, Lux Seating, Prem, CWP, Tech, Rr Climate, CA