Arriving weeks after the launch of the iPad 2 - significantly later than Apple's iPad Smart Covers - the new iPad 2 Dock ($29) is a modestly tweaked version of last year's official iPad Dock, this time with a large plastic supporting lip on the front of its glossy white plastic base. The iPad 2 Dock continues to have Dock Connector and line-out ports on its back, capable of data, power, video, and audio connections, and a gray rubber pad on the bottom.…