A pair of Infiniti M vehicles will be coming to Pebble Beach according to the latest reports. The vehicles, previewed in these sketches, which appear to be leaked official images, show the core design lines as Nissan/Infiniti has typically done to preview upcoming models.

Autoblog's Damon Lavrinc appears to have snagged the sketches from a prime source, as they look to be authentic. They show about what you'd expect of an M Coupe, but also another vehicle that may preview a four-door-coupe design on the M platform. The information that comes along with the sketches says that the models will push Infiniti's product lineup into previously uncharted waters for the brand, with one of the two models being "performance oriented."

That certainly fits with the idea of a four-door coupe and actual coupe. The M Coupe would be the obvious choice to be more "performance oriented," though how Infiniti will get there isn't yet clear. They could snag the V-8 from the sedan to deliver around 420 horsepower and 417 pound-feet of torque. Or, as Autoblog suggests, they could go the twin-turbo V-6 route previewed by the Essence concept. That's not as far-fetched as it might sound, as the M Coupe is also rumored to get some styling cues from the Essence, specifically around the rear window kink.

We'll have to wait until August's Pebble Beach Concours to see the final product, but it's due for production shortly thereafter, so we won't have too long to wait to get behind the wheel.