In addition to the Thunderbolt 3 External Graphics Dock, ZOTAC also showed off a smaller contraption which does essentially the same thing - wire your laptop to a graphics card over Thunderbolt 3. This device is unnamed for now, too, and is referred to as "Thunderbolt 3 External Box" (with "graphics" being a notable omission).

Unlike the graphics dock, this one looks like a ZBOX. It takes in Thunderbolt 3 (40 Gb/s) input, too, but isn't designed for high-end graphics cards. What you have instead, is a 120W power-supply which doesn't have any additional PCIe power connectors, and a PCI-Express 3.0 x16 slot, which can hold on to graphics cards that make do with slot-only power. The card can be dual-slot, but no more than 17 cm in length. You also get a 32 Gb/s M.2 NVMe slot, which you don't on the dock, and four downstream USB 3.0 ports.