I mentioned a new case for the iPad that has a keyboard earlier today that was cool and a new case for the iPhone has now surfaced that adds a keyboard to the smartphone. We have seen keyboard cases already for the iPhone, but the TK-421 comes from ThinkGeek, a company known and loved by many geeks. The keyboard comes in two versions.

The case can be had for the iPhone 3GS and the iPhone 4. The case will fit the iPhone 3G, but the 3G doesn't support Bluetooth keyboards. The QWERTY keyboard hides under the iPhone and when needed the iPhone swivels out of the way for use. The keyboard connects with Bluetooth and a magnetic clasp keeps the keyboard tucked away when not needed.

The device was designed and invented by the monkeys at ThinkGeek and allows for typing Blackberry style with any document or when surfing the web on the iPhone. ThinkGeek points out that the thing is not an Apple licensed product. Either version of the case sells for $49.99 and the ship date is estimated for mid-November in limited numbers.