During its livestream, Nintendo announced Fire Emblem Echoes: Shadows of Valentia for the Nintendo 3DS family of systems, which includes 2DS.
According to Nintendo, "Echoes is inspired by the second installment of the series, Fire Emblem Gaiden, released exclusively in Japan in 1992."
Players will control two protagonists, Alm and Celica, and help them through the "tragic war dividing the continent of Valentia." Free-roaming exploration was announced, along with dungeons to get items and flexible character progress—"everything that made Fire Emblem unique," per Nintendo.
Fire Emblem Echoes: Shadows of Valentia is set for release on May 19 on 3DS systems. On the same day, you'll be able to add amiibos of Alm and Celica to your collection.