I work on Frostbite Rendering and DICE games
We have published information about older versions of this tech. We have improved this in numerous areas over time, but many aspects still hold true to this information:
For Dragon Age Inquisition, we also added advanced terrain displacement mapping to the terrain (BF3 had basic terrain tessellation), and this tech made its way into Star Wars Battlefront, too.
Shading (i.e. PBR) has been one of the biggest improvements as of late to our fidelity (aside from great artists and photogrammetry - http://www.frostbite.com/2016/03/photogrammetry-and-star-wars-battlefront/)
We continually publish quite a lot of information here: