My understanding is that even though diesels are now coming off the assembly line, EPA has not yet provided final certification for the 2010 model - coming as early as next week - after which, they can be released to the public. Because of that, I am hearing that my own x5 may ready in a range of mid-october to early November. No VIN and no delivery date set yet for a late August order that is apparently "in production" since late September.