Onto next year? Not too much. Schedules slip, and space flight schedules even slip faster. But if not 2018, 2019 would be very likely. The next big milestone is

Onto next year? Not too much. Schedules slip, and space flight schedules even slip faster. But if not 2018, 2019 would be very likely. The next big milestone is the F9 Heavy flight. Other than that, they first have to fly a manned mission to the ISS first. Once that has been achieved, flying around the moon is not especially difficult, probably technically even easier than to the ISS, as less precision is required.