I am ready to order a 2015 X5 diesel. The Sales Agent says it will be August production. Since the engine improvements do not impact the diesel and the transmission improvements are at the start of production, initially I did not see these changes relevant to my order. After more thought I now am conflicted as to whether I should wait another month to get the upholstery upgrades. Any suggestions and/or photos of the upgraded upholstery? I will be getting the multi contour seats.