The Archdiocese of Turin, under the leadership of the Pontifical Custodian of the Shroud Msgr. Cesare Nosiglia, Archbishop of Turin has done an extraordinarily good job of organizing the 2015 Exposition. Part of this has been assembling a network of informative cyberspace venues.
Their home page is available in Italian, French and English. Not so, unfortunately, are many of the interior pages, a disappointment only because there is such wonderful content. Alas, forsooth, sweet Google translation. To read or not to read, that is the question.
Here are the official social media outlets: