The comment from the Lenovo spokesperson indicates it will be the GeForce 11 series. But of course, that's if this guy actually has inside information and wasn't merely speculating...
Speaking with Brainbean at the company's E3 booth (published last week), the spokesperson was shown describing the company's Legion Cube gaming desktops, which ships with a GeForce GTX 1060 graphics card in its base variant. The spokesperson is then heard saying that along the road, the company would expand its graphics options to include GeForce "11-series."
Via: TPU