The recently released box art reveals that the game will feature downloadable content.
http://www.nintendoworldreport.com/newsArt.cfm?artid=23118
Dragon Quest Monsters: Battle Road Victory is due to be released in Japan in less than two months. The card based game is a port of the arcade game, Dragon Quest Monsters Battle Road. Not much is known about how the Wii version will be different from the arcade version.
Besides a different control scheme, one thing that the Wii version will boast is paid downloadable content, as revealed by the orange Nintendo Wi-Fi Connection logo on the box art. In addition to this, it also states that Wi-Fi combat will be free, with some extras available at a premium price.
Dragon Quest Monsters: Battle Road Victory is slated for a July release in Japan.
