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I suspect it will be full auto with exposure compensation. The top 1/2000 shutter speed and f/3.2 lens means that with a base ISO of 50-80 it can handle bright sunlight situations. If the aperture is fixed then the only variable is shutter speed and will most likely be controlled by the camera.
Dirk @ Japan Exposures is getting one of the early ones to review so we'll find out then.