Bright idea: Windows 7 saves your laptop battery by reducing display
brightness after a period of inactivity — but if you immediately interact with the computer to restore brightness, Windows 7 waits longer before reducing brightness the next time.
The update, which will come in a few weeks, will do two things: The Android navigation keys will «fade - out»
after a short
period of inactivity; the screen's
brightness will drop 50 nits, which Google said is «imperceptible,» but it will significantly reduce the load on the screen.