Lenovo seems to be working on a premium Tablet which has made its way at GFXBench. It is listed with the name Lenovo TB-X804 (Probably a model number).
The GFXBench is a popular benchmark that has been a source for several leaks. According to the listing, the Lenovo TB-X804 features in 10-inch display, which is a multi-touch screen with 1920 x 1200 pixels resolution.
The device is powered by 2GHz octa-core Qualcomm Snapdragon 625 SoC with Adreno 506 GPU. It has 4GB RAM, 64GB internal storage space. It comes pre-installed with Android 7.1.1 Nougat OS out of the box.
The TB-X804 packs in a 5MP front facing camera capable of taking WUXGA (1920 x 1200 pixel) resolution videos. On the back side is an 8MP main camera with with Auto / Touch focus, Face detection and LED Flash. It records WUXGA videos as well.
Usual connectivity options like Wi-Fi 802.11 b/g/n, Bluetooth and GPS (mentioned in the listing) should be supported. The tablet will also include accelerometer, Ambient Light sensor and Pedometer.