The second (and final) round of DLC has been released on the Steam store. New stages, costumes, weapons and the Japanese voice option have been added.
Just released DLC:
DW7 ORIGINAL COSTUME PACK 1
DW7 ORIGINAL COSTUME PACK 2
DW7 ORIGINAL COSTUME PACK 3
ORIGINAL COSTUME PACK
WEAPON SYSTEM & UPGRADE PACK
WEAPON SYSTEM PACK
NEW STAGE & ANIMAL PACK
NEW STAGE & CAMP SYMBOL PACK
SOLDIER & OFFICER UNIFORM SET
JAPANESE VOICE OPTION (free)