A “Hard EX” mode is one of the downloads, which is basically a level above Hard mode. It includes new items and a “free battle” option allowing you to increase your team’s strength.
The second downloadable piece of content is “Edie’s Side Story” which will cost just around 600 yen. It includes a fully voiced story as well as entirely new battles. It’s pretty cheap for all of that. The downloadable content will eventually come to the States when the game releases here.
[Valkyria Chronicles gets DLC this August in Japan] [Thanks The Guy!]