Such is the title of this sixteen page academic essay from Nova Religio: The Journal of Alternative and Emergent Religions. It is very worthwhile reading. The author discusses, among others, John Major Jenkins’ ideas about 2012.  Here’s the abstract:

ABSTRACT: According to the ancient Mayan Long Count calendar, a cycle of more than 5,000 years will come to fruition on the winter solstice of 2012. While this date is largely unknown among contemporary Maya, some participants in the New Age movement believe it will mark an apocalyptic global transformation. Hundreds of books and Internet sites speculate wildly about the 2012 date, but little of this conjecture has a factual basis in Mayan culture. This paper provides an overview of the primary currents in the 2012 phenomenon, examines their sources, and speculates about developments as this highly anticipated date approaches.