With the 2015 Mercedes-Benz GLA arriving late next year, the least expensive crossover the automaker currently makes will be moving up slightly in size, as these spy shots appear to show. The sport ‘ute is covered by thick camo, but we can see development is coming along.

Judging by the prototype’s proportions, it looks as though the next-gen Mercedes GLK will be larger than the current model. Though it’s hard to tell through the heavy camouflage, styling might also evolve to fit in with the rest of Mercedes’ lineup, moving from the current boxy look to a more rounded design.

The next-gen Mercedes GLK will be based on the upcoming C-Class, which means the two vehicles may share drivetrain options. Known global drivetrains for the C-Class include gasoline, diesel, and hybrid options, and our spy shooter tells us a hybrid GLK variant could be in the cards. We liked the 200-hp, 369-lb-ft 2.1-liter turbodiesel I-4 available in the refreshed 2013 Mercedes-Benz GLK250 Bluetec, and wouldn’t mind seeing that mill return in the next-gen model.

The 2015 Mercedes C-Class is expected to debut at the Detroit auto show early next year, and you can count on the next-gen GLK to bow sometime after.

Click here to see the full photos at MotorTrend.com