Firmware fixes aplenty, too. http://www.bit-tech.net/news/hardware/2016/02/18/microsoft-surface-book-uk/1
Great laptop, but crazy prices. I was going to get one but went with a HP Spectre X360 instead. Just as nice and apart from the lack of discreet GPU just as high spec and around £500+ cheaper. The HD520 GPU in the new Intel CPU's is cracking anyway, I can still run plenty of games and even a few FPS ones with lower details.