One of a handful of BMW X4 images that have leaked out ahead of the official Shanghai debut.

BMW seems to be averse to leaving open any white space – or alphanumeric combinations – it seems, with all manner of new product filling in the gaps.

And so, with the replacement for the 3-Series Coupe and Convertible being rebadged the new 4-Series, the German maker had to come up with the coupe/crossover X4, as well. Long expected to debut later this month at Auto China 2013 in Shanghai, these images we found leaking out across the web appear to be the real thing – just a little earlier than BMW had apparently planned.

The downsized version of the familiar X6 maintains the controversial, coupe-like roofline of the larger Sports Activity Vehicle but shares the same basic mechanicals as the smaller BMW X3.  The front and rear also adopt some of the basic design cues of the latest-generation 3-Series sedan, though there’s a fair bit more chrome here, tweaking out the distinctive new bumpers.

The X4 will become the latest addition to the BMW Sport Activity Vehicle line-up next year.

This appears to an X6 in concept trim, so expect a few minor revisions by the time production begins, notably including the door handles, mirrors and oversized wheels and tires.

While BMW is holding back on details waiting for the Shanghai Auto Show debut, CEO Norbert Reithofer previously indicated the new model will measure about 183 inches, nose-to-tail.

In terms of powertrain options, the production model should be offered with a wide range of gas and diesel alternatives, starting with a 2.0-liter inline-four, according to various sources. A TwinPower Turbo I-6 rated at 300 horsepower and 300 lb-ft of torque should be in the line, as well. And, knowing BMW, an M-Series offering is almost certainly set to follow.

The BMW X6 is expected to appear in 2014, though it’s a question whether it will carry a ’14 or ’15 badge.

Production has been confirmed for the maker’s Spartanburg, South Carolina assembly plant.