This is a win-win deal for a major upgrade (if the confirmation and early leak benchmarks are true) and for those who are on the fence about buying the game. The free GeForce NOW sub is just a cherry on top.

Official Announcement [nvidia.com]

"… If you purchase one of these new GPUs or a pre-built GeForce RTX 30 Series PC at a participating partner, you’ll get a PC digital download copy of Watch Dogs: Legion, and a 1-year subscription to our GeForce NOW cloud gaming service, enabling you to play your PC games on other devices and when you’re away from home.