Is the remote controller adapter RA-E3 conversion cable (or a third party equivalent) sold outside the 60Da bundle? Additionally will this cable work with any body having an E3 socket?
The adapter should work to allow any accessories with an N3 connector to be used with a Canon camera having an E3 (stereo mini plug) socket.
Amazon once sold such an adapter in the U.S., but it is not currently available. However, many of the third party accessories that are available with one connector are also available with the other and are usually fairly cheap. There's even a TC80N3 knockoff that comes with adapters for almost every imaginable camera that uses the basic three wire shutter release.