Emporer Kisu
Master Togo
Lo Sha
Argo
Countess Danika zu Heltzer
The Crimson Skull
Part of the map (not really new, but a cool pic)
Ancient Map
There also look like there is a couple of different screenshots in their SS section: http://www.guildwars.jp/event/c2/ss.aspx
The concept art section also has a couple different things: http://www.guildwars.jp/event/c2/artworks.aspx