Motorola Atrix 4G's Laptop Dock and Webtop app turn your phone into a smartbook

Turns out Motorola's just-announced Atrix 4G for AT&T will be available with a setup they're simply calling the Laptop Dock that pairs up with an app on the phone -- Webtop -- to transform the Atrix into a full-fledged smartbook. All you do, it seems, is dock the phone into a larger, 13.9mm thick chassis -- great for those times when nothing other than a big physical keyboard will do. We don't know how much it's going to cost on top of the phone itself, but something tells us it won't be a bundled accessory. More details as we have them.