Colorful mainly focuses on the Chinese market but this manufacturer often has quite interesting designs. Over at Computex last week, Colorful had a motherboard on display with an integrated GeForce GTX 1070 GPU!
This motherboard is codenamed B150-GP104, which suggests its based on the Intel B150 chipset and supports Intel LGA1151 processors. The graphics card is integrated into the motherboard's PCB and features Samsung GDDR5 memory chips.
The size of the motherboard seems to deviate from the Mini-ITX form factor so it will likely require a custom case. This isn't the only motherboard from Colorful with an integrated high-end GPU, the company also has versions with a GeForce GTX 980 or GeForce GTX 960 GPU.