The major change induced in this age as a psychic construst is the expulsion of Quetzalcoatl from Mictlan(the underworld) as symbolically tied to the venus transit of June 6th, 2012.

Quetzalcoatl displace Tezcatlipoca as the dominant personificant of the coming age. Tezcatlipoca being symbolized as the smoking (obfuscated) mirror and creation through fire/conflict. Quetzalcoatl is indicative of cool temperament and the value of deep reflection in a cognitive sense.

the sense of time is also an important difference between the two.