I doubt it but I hope it does... Zombie apocalypse anyone?
A new cycle. I watched a video of a Mayan elder (I honestly didn't even realize they were still around!) and he mentioned that the even actually takes place over 3 days, from the 21st to the 23rd. At some point in time on the 22nd, for a window of 8 minutes, people are supposed to achieve some sort of enlightenment. He mentioned that most people will forget it afterwards, thinking it no more than a fleeting inspiration and recommended writing down any thoughts or ideas that may come to you on the 22nd.
Possibly the beginning for the end, most likely just another day.