Autoweek seems to be confirming the X4 concept rumors today too.
I can't recall two BMW concepts being launched at one show since, well, ever.
I suppose with so many new models coming out, eventually they have to start doubling up (or launching at more shows, or hosting independent launch events).
2008 Interlagos Blue E93 M3 - M-DCT
2011 Salsa Red Jetta TDI Sportwagen - DSG