The first pictures of the rumored NVIDIA GTX 1060 5 GB SKU card have surfaced online. The new Gigabyte card is identical to the GTX 1060 6 GB Windforce OC but comes with the NVIDIA GP106-350-K3-A1 GPU that supports up to 5 GB GDDR5 memory and reduced memory bandwidth.
https://www.notebookcheck.net/First-pictures-of-the-Gigabyte-GTX-1060-5-GB-surface-online.274888.0.html