Last September, Motorola launched its flagship smartphone, the Moto X 2nd-gen. In addition, the company also introduced a new smartphone accessory, the Moto Hint, a tiny wireless Bluetooth earbud that lets you control your Moto X using voice commands. Now it appears that Motorola will launch the second-gen Moto Hint at its July 28th eventalongside the Moto G 3rd-gen and Moto X …