Sources within BMW are saying that the project is currently snoozing because BMW wants to see what happens with the U.S SUV market. At the moment, things aren't looking good as most customers are converting to more fuel efficient cars like the Honda Civic. This could make the German car-maker cancel the project.
The SUV segment is under extreme fire from environmentalists and generally anti-SUV groups, hence why the BMW X3, X1 and Mini SUV are arriving. The X7 would only work if alternative fuels like hydrogen and hybrid technology become more mainstream.