I think there will definitely be more vehemence.
Just look at any "imminent" prophecies. The Great Disappointment, Campingate(s), The coming of the Ipad 1, you name it, and there was more vehemence nearer the date.
Now, obviously I'm not going to predict anything that I expect to remotely come true, but;
I expect there to be more... entertaining, vehemence than in previous cases. Just look at the New Age corner, and how colourful they are now, and think about how interesting they can get when they think that a) the world is about to end, or b) a global consciousness shift will happen.
Personally, I don't think anything metaphysical (or physical for that matter) of any import is going to happen, aside from the colourful displays of belief in the aforementioned changes.
I think I'll just sit back and enjoy the displays.