6 Months Ago, Wired says (in Fire Emblem Dev Making Dragon Quest Wars on DSiWare) Developed by Intelligent Systems, the creator of Nintendo's first-party strategy games Advance Wars and Fire Emblem, the downloadable game will use the characters and settings from Square Enix's popular role-playing game franchise with “board game ...

And 1UP.com says (in Square Enix Japan Announces Dragon Quest Wars For DSiWare)  NY
Square Enix promises an "easy to learn, difficult to master" game that will be playable via Wi-Fi with other DSi owners across Japan. Interestingly, Dragon Quest Wars is being developed by the Nintendo-owned Intelligent Systems of Fire Emblem fame.