Tethered shooting in OS X is more or less system based. In fact, Apple provides a free tethered app with OS X … It offers only spartan controls but it works for any camera listed as supported for tethered shooting by Aperture … just go to Applications>Image Capture.

With your camera connected to the computer and turned on, select File>Take picture and select the destination folder for the images you are shooting. you can depress the shutter release or use either the space bar or return key on the keyboard to trigger the tethered camera.

So it shouldn’t be difficult to include tethering in any future solution whether it be an Apple application or third party solution.