According to reports Apple has submitted a filing with the FCC for a Bluetooth version of the Mighty Mouse which was introduced back in August 2005.
The new mouse will be exactly the same as the current version except using Bluetooth for its wireless feature, the mouse will use two standard AA batteries.
The mouse is current codenamed M6 and according to sources should arrive very soon.
View the new Mighty Mouse User Guide, and some more pictures, here and here.
With further investigation into the Bluetooth Mighty Mouse it appears that the mouse no longer uses LED tracking but makes use of Laser tracking which is much more accurate and works on a larger variety of surfaces.
