That's probably just as well, since the new GLK is expected to grow in size in order to better separate it from the recently unveiled GLA-Class. And with a more curvaceous body, the larger dimensions of the next GLK will likely be better masked.
The next GLK will share its platform with the 2015 Mercedes-Benz C-Class, and thus, powertrains will likely be shared between the two. That means gasoline, diesel, and possibly hybrid power will find its way to the GLK, a vehicle that is currently only available with a naturally aspirated 3.5-liter V6 or a brand new 2.1-liter turbodiesel inline-four.
Mercedes will show the next C-Class at the 2014 Detroit Auto Show in January, with sales starting in August of next year. Look for the GLK to show its face sometime after that.