According to this video released by GW, the new rules are about freedom and being able field mostly what you want on the battlefield. There are three ways to field units, Battle Forged, Unbound, and Formations. The video is Jervis Johnson talking about the new edition for 3 minutes and how you get to choose your armies in 6th edition.
I also have this week's releases, and as I find more, I will get it up onto the site this morning.
via an anonymous source on Faeit 212
These are in Australian prices
Standard edition 140
Collectors Edition 360
Physhic Cards 16
Objective Tokens 12
Here is a link to the video with a couple of screen shots of what is revealed in the video
More screen shots can be seen here on XVI legion