Microsoft has pushed a new firmware update for its Surface Pro 4 and Surface book (including Surface Book i7 with Performance Base) devices. The new April update doesn’t come with any new feature but the usual bug fixes and performance improvements for Surface System Aggregator, Intel(R) Precise Touch Device and Surface Integration.
Keep in mind, this update is only available if you are on the Windows 10 Creators Update. If you have not downloaded it yet, visit this page on how to download and install.
Here is the changelog for the April 2017 firmware update, which is similar for both devices:
Windows Update History Name
Device Manager Name
Surface driver update for Surface System Aggregator
Surface System Aggregator in Firmware
Intel Corporation driver update for Intel(R) Precise Touch Device
Intel(R) Precise Touch Device in HID
Surface driver update for Surface Integration
Surface Integration in System devices
The new update will be available via the Windows Update and if it is not available for you yet, be patient because as per Microsoft the roll out happens in stages, so it might take some time before every one sees it.