Huge SpaceX fan here, but I've heard from various news sources that the company is famous for aggressively posting dates and then slowly letting them slide. Might that be the case here? (Still, even if it's 2 or 3 years, wow!)
"...The draft report from the GAO, which is Congress’ investigative arm, also concluded that neither SpaceX nor the Boeing Co. is likely to conduct regular space taxi flights to the space station by 2018..."
http://www.geekwire.com/2017/gao-journal-spacex-rocket-turbo...
We should have learned from both the early Apollo program, and the Shuttle failures, that human lives shouldn't be treated as expendable capital in this industry.
Both SpaceX's current announcement, and the US Gov's desire to put humans on the first flight SLS flight, are deeply troubling in that regard.