If you watch the game play video with the Barb from 08 (I know this video is old and things have changed) you see him wearing a Gothic set. Unlike the D2 Gothic chest piece which was pretty much a full plate on a Barb besides the spikes on the shoulders were missing. The D3 Gothic plate covers up way less than the D2 version did.
I really hope that's not the final armor. I loved Barb's final armor, and DIII should provide for a full-plate barb, at the very least because there's NO other character that will be able to wear full plate.