The BMW X7's official unveiling may only be weeks away.

BMW's X7 flagship utility vehicle will make its global debut at this fall's Frankfurt Motor Show, a new report finds.

That's according to BMW Blog, which claims the X7 will debut as a thinly veiled concept car with a hydrogen fuel cell powertrain. Although the X7 on hand in Frankfurt will be just a concept, it's possible that the large SUV could actually make it to market with a fuel cell powerplant.

Of course conventional powertrains will also be available in the X7. BMW is expected to offer six-, eight- and even twelve-cylinder engines in the X7. Hybrid powertrains will also be offered, as well as diesels.

The X7 will be positioned as a larger alternative to the X5, but the two utility vehicles will feature distinct styling. "There's very little resemblance to the X5, so it's not an extended wheelbase X5. It's very different - we wanted it to have its own identity," BMW AG sales and marketing director Ian Robertson said of the X7.

The X7 will go after high-end three-rows like the Mercedes-Benz GLS. It'll also offer the kind of luxury to rival the Land Rover Range Rover. Prices for the X7 will likely start in the $80,000-range and stretch well into the six-figures.

The X7 will likely enter production at BMW's Spartanburg, South Carolina, plant late next year, with sales beginning in early 2019.