Bungie appears to have launched an ARG this afternoon to get the community buzzing in preparation for Rise of Iron.
There is too much information to post all of it here, but if you want to jump down the rabbit hole with the rest of us, you'll probably want to start with owlsector.bungie.net (the official website), one of the two threads that have popped up [so far] right here on DBO, or if you're really desperate you could head over to the Destiny Subreddit Megathread.
Have fun contracting infections!!