GMC seems to be moving quickly to get its line-up's interiors all on the same page. These spy photos reveal that the GMC Yukon full-size SUV line will be getting an update that will refresh the exterior somewhat, and the interior much more significantly. The design of the interior is clearly derived that of the new Acadia.
The center stack is dominated by one large vertical touchscreen, and sitting in the lower quarter of the screen is a floating multifunction knob. At the base of the screen are some chunky piano-key style buttons. They appear to be connected to some of the climate functions based on the screen's readout. On either side of the screen are vertical air vents, and we can just make out a bit of wood trim.
As for the exterior of the new Yukon, it won't be radically changed. While the Acadia and Terrain will be nearly all-new, the Yukon will just be a refresh with changes focused on the front and rear fascias. They're still very well covered in these spy shots, but expect some changes to grille shape and headlights to change somewhat. The example pictured appears to be an AT4 trim based on the shortened front bumper for improved approach angle.
Since this is a refresh, we wouldn't be surprised if we see the new Yukon shown sometime this year or early next. It will probably continue to offer the same range of engines and transmissions, including both gas V8s and the diesel inline-6.