Logitech has introduced its new Ultrathin Keyboard Cover for the third-generation iPad and iPad 2. The Ultrathin Keyboard Cover is a slim aluminum cover that attaches to the iPad with a magnetic clip, and features a built-in Bluetooth keyboard with stand, support for the iPad’s magnetic sleep/wake functionality, a piano black finish, function keys for improved navigation, and a six-month battery life. Logitech’s Ultrathin Keyboard…