Sony has officially confirmed it will be sharing 'basic specifications' of its E-mount for free to manufacturers of lenses and mount adaptors starting April 1, 2011. A company statement says 'this move will open the way for manufacturers of various lenses and mount adaptors to develop products conforming to 'E-mount' specifications, allowing users of the NEX-3, NEX-5, NEX-VG10 and other 'E-mount' compatible Sony digital imaging products to be launched in the future to be able to use interchangeable lenses from both Sony and other manufacturers.' The company has not specified whether these 'basic specifications' will extend to the AF protocols or just the physical construction of the mount.