Microsoft has just started rolling out a brand new firmware update for the Surface Pro 4 (via
Neowin) that brings support for Microsoft's new Type Cover and Signature Type Covers launched alongside the new Surface Pro.

If you're a Surface Pro 4 user, you may have already realized that the new Type Covers already work on your device. Today's firmware update is just improving reliability and compatibility, giving the device official support for the new Type Covers.
Full story from the WindowsCentral blog...