Back in 2017, Microsoft launched the Surface Book 2. Since then, Microsoft has not announced any successor to this device. Recently, a new Surface device with Intel Core i7-1065G7 Processor and NVIDIA GeForce GTX 1660 Ti Max-Q GPU was spotted on 3DMark benchmarks. So this device could be the upcoming Surface Book (probably called Surface Book 3) because only the Surface Book series has a dedicated graphics card in Microsoft’s Surface lineup.
Two benchmarks were spotted. One device was running NVIDIA GeForce GTX 1660 Ti Max-Q GPU and another was running NVIDIA GeForce GTX 1650 Max-Q GPU. The 15-inch model of Surface Book 3 could be running GTX 1660 Ti while the 13-inch version will be running GTX 1650.