BMW has its own grammar rules. For instance, M and X cannot appear in the same car name. So while a BMW sport-ute/crossover (or whatever they want to call it) can for all intents and purposes be an M vehicle – that is, top-of-the-line sport model with all the go-fast components and power to spare – it can never wear the vaunted M badge. That is, for the most part, just semantics. BMW's solution for the 'Ring-running versions of its taller vehicles is to slap an S on there instead.

With those rules laid down, we bring you these spy shots of a BMW X6 M 5.0iS. While the name might have you thinking that BMW has shoehorned in the M division's highly praised 5-liter V10 to the X6, sources suggest otherwise: the same twin-turbo version of Munich's 4.4-liter V8 producing in excess of 500 hp is expected to feature in the next M5. Information indicates a release in about a year from now, complete with all the extra dressings you've come to expect from a performance-oriented Bimmer. You didn't think Bavaria would pass up the opportunity to create a high-performance version of the strangest segment-buster yet, did you? Certainly not when the opportunity to further confuse us with its nomenclature is just so tempting.

[Source: World Car Fans]