If you are one of the lucky people running a Surface Pro 3, you will want to head into Settings > Update and recovery to check for new updates today. Besides the usual slew of security and x64 patches for the OS, a new firmware update is also being distributed. Firmware is the essential feature to make the hardware and OS work better together, meaning they tend to fix bugs, improve performance, and optimize the user experience.
Microsoft has published the specific changes to this firmware, which is on a rolling basis (meaning you may not see it right away). Here is what is new.