According to Back to the Future II the hoverboard was in use on 21 October 2015, but to date we haven’t actually seen one – well, not really. There have been videos apparently showing them, but they’ve all been fake. Now an American electrician has made a (almost) working one, but it only works under certain conditions.
http://www.theage.com.au/digital-life/digital-life-news/working-hoverboard-finally-brings-us-back-to-the-future—almost-20141021-119nx7.html