I guess, the LCI model was actually 8/2009 production looking at it. I think in 2011 there was another improvement, facelift, whatever but it wasn't a LCI really. In 2011, LED headlights and improvements to the entertainment system and iDrive were added. August of the previous model year seems to be where you can get some of the improvements that might be coming on the next model year or where the crossover nearly takes place. I think I read that September is when BMW usually spools up for the next model year. I just know when I was shopping, I didn't want anything older than 8/2011 production and mine happens to also be a 2011 model year but must have been a late one. I don't remember the specifics but it had to do with certain little improvements and features that the late production model had over the older ones.

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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim
2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim