22Moo (http://www.22moo.com.au) has added support for the iPad and iPhone 4 to their redesigned iPod touch and iPhone compatible gamepad: the GameBone. A shipping date and pricing haven’t been announced.
However, specs of the GameBone include: an eight-way directional pad; four action buttons, two shoulder buttons, stereo speakers, omni-directional microphone, 1600mA lithium battery, kick-stand, battery remaining button and indicator, changeable cores for iDevices; and, with Apple’s approval, an Apple authentication chip.
The GameBone’s availability is currently targeted for end of the fourth quarter of 2010. It will purportedly be placed into over 5,000 stores worldwide by more than eight international distributors.