The reason for the discrepancy is due to the various sources simply gauging one probable reality. From my own research many seem to be alluding to a potential 3 way dominant timeline split consisting of 3D, 4D & 5D simultaneously, which would account for the surface conflicts where the transition is concerned. Bashar dubs this as the 'splitting of the prism' where crossing the 'barrier' would take dominant frequencies and literally form them into simultaneous parallel realities consisting of the various densities. I assume 3D will be shortlived however with 4D & 5D (The latter being a non physical orientation in a nested fashion) eventually coexisting in the years to come. The one you experience will of course be your dominant. 2012 will thus be quite literally what you make of it.
That being said, there is also the possibility of different terminology as Monica mentioned above, where 5D is in reference to a shift from the current classical understanding of 3 spatial dimensions and the 4th time ('4D').
That being said, there is also the possibility of different terminology as Monica mentioned above, where 5D is in reference to a shift from the current classical understanding of 3 spatial dimensions and the 4th time ('4D').