If you read Japanese, here's the announcement

Fire Emblem: Awakening arrives in Japan on 19th April, and as expected it will be the first Nintendo published retail title on 3DS to feature DLC (downloadable content). It's a game with plenty of potential for additional add-on content, such as maps and additional characters, and the debut DLC appears to feature both.

As reported by Andriasang, the first available download will be Fire Emblem series veteran Marth: once downloaded you simply clear a map to have the option to add him as a party member. This DLC will be free until 31st May — no doubt to encourage early buyers — and after that point it will cost ¥300, which at the time of writing converts to about £2.30.

Marth will no doubt be useful on the battlefield, but what do you make of this as the first round of DLC for this title?

[source andriasang.com]