And then there were three. What you see above is the Moto X along with its SIM tray and a matching nano-SIM. According to GSM Insider, this picture (which we've enhanced) recently popped up in Hong Kong. We've checked the left side of Motorola's upcoming flagship in other leaked images, and the dimensions of the SIM tray opening appear to be correct. A such, the Moto X is poised to follow the iPhone 5 and PadFone Infinity as the third-ever handset to adopt the nano-SIM (4FF) standard. It's unclear why the company chose the new SIM form factor (the phone isn't particularly small), but we'll be sure to ask at Thursday's launch event.