Update released on 11th June,2013, includes these firmware and performance improvements:
In case of Surface RT:-
- Surface Home Button driver update that improves the reliability of the devices waking up immediately on the first button press.
- Firmware update for Surface Type Cover and Surface Touch Cover that improves functionality for both accessories. Includes the ability to toggle function keys, new shortcuts, and helpful keyboard navigation improvements.
In case of Surface Pro:-
The update includes LifeCam driver that enhances clarity for low light operation and improves reliability when switching between the integrated camera and an external camera.
How to get this update:-
Via Windows Update updates are automatically installed.