While the Surface Studio was the star of the show, the Surface Book had a brief moment in the limelight as Microsoft announced it had bumped up the graphics and battery with a new and improved Surface Book configuration.
First off, keep in mind Microsoft apparently doesn’t know what to call the updated Surface Book. Microsoft called it the ‘Surface Book i7’ during its presentation (which was confusing, because the old version also came in i7 configuration), but the Store page and press assets call it the Surface Book ‘with Performance Base’ an.