Earlier this month, Motorola officially announced the new Moto X, its latest flagship smartphone, offering enhanced specs and a slew of customizable options. But when is it actually availble for sale? Motorola has just shed some light on this question. From Tuesday September 16, pre-orders will open in the US for the Moto X (AT&T and Pure Edition), as well as the Moto Hint and turbo charger accessories. In related news, the Moto 360 smartwatch will be back in stock the same day in the US too.