These numbers are bad for BMW but I would guess good for the consumers. Last time the X5 sales went so low was last January. The following month, BMW had a $2500 incentive on the X5! I wouldn't be surprised to see the same.
And I really hope dealer will soften the blow when it comes to new X6. i.e., no mark up, and may be a couple of thousands of MSRP (no invoice data out yet)