Are you a Valkyria Chronicles fanboy or fangirl? You have a chance of getting a free limited edition art book if you go to New York Comic Con ... dressed up as a character from the game. Sega has a huge presence at the show this year, with playable demos of MADWORLD and The Conduit on display.
A recent blog post on Sega's website also notes that DLC for the game will be available soon. Stay tuned for more info.