yes all the iPad ones work over bluetooth. the Surface covers work over Microsofts magnetic power and data connection
http://www.engadget.com/2012/06/14/m...t-application/
too funny that Engadget speculated that "it's not likely to arrive in a product yet" and here it is a week later
I'm assuming there will be some other accesories coming that can work over the port. speakers etc Im hoping for a large monitor with a dock at the base so you can simply set the tablet onto the dock and have a larger display to work with at the desk and still use the tablet as a second monitor(with out the need for plugging in an hdmi cable)