Millennial expectations concerning the year 2012 are extremely diverse but as a whole they can be seen as a revival of the idea of collective transformation present in New Age movement since its very beginning. For some time in 1990's this idea was held back to some extent giving way to the idea of individual transformation.
Concerning the year 2012 and following events, both these ideas are interconnected: the individual transformation of substantive amount of people is expected to cause the collective transformation of the majority of the others. And the collective transformation would enable the planet Earth and all its inhabitants to reach higher state of individual consciousness.