configuring them with an i7 10710U would make so much more sense instead of the 4 core Ice Lake one. Maybe they did it because it is a 10nm vs 14nm chip which might improve a bit on power consumption? Or maybe because those who will use it in tablet mode and do gpu-bound work on it will see an improvement with the iris plus g7 vs the uhd 630?
Due to be unveiled later today, the Surface Book 3 has been confirmed to be arriving with a choice of at least three GPUs. The Surface Book 3 will be an all Intel and NVIDIA affair though, with no AMD APUs or GPUs making their way into Microsoft's premier Surface hardware.