It looks like these devices are indeed affected by a change which came into effect on July 1, 2016. However, this is going to be a stepwise reduction of 0.8% points rather than a complete elimination. So this month the duty changed from 4.9% to 4.1%.

Source: German customs, cited by http://www.heise.de/foto/meldung/Zollsatz-Senkung-bei-Kamera...