It is not real 4K in any material way due to having a final master at 2K. Studios have upscaled the 2K image to 4K and retouched the content for your 4K UHD TV. You should see some visual improvement over a standard 1080p Blu-ray. Check the information below to see if the studios have upgraded the video with HDR or added immersive Dolby Atmos or DTS:X audio tracks.
Westworld isn't your typical amusement park. Intended for rich vacationers, the futuristic park allows its visitors to live out their most primal fantasies with the robotic "hosts." However, the robotic hosts have evolved an artificial consciousness that is similar to, yet diverges from, human consciousness. No matter how illicit the fantasy may be, there are no consequences for the park's guests, allowing for any wish to be indulged; but there is a price to be paid.