Well finally. Nintendo revealed at its E3 keynote that Golden Sun DS is now Golden Sun: Dark Dawn. A new trailer was shown for the game, displaying some very impressive graphics on the DS, including huge summoning spells that span both screens. The trailer also showed some touch mechanics, including moving objects with the stylus to open paths and solve puzzles.
More important than all that, the game will be released this holiday. If it's on the show floor, rest assured that we will be playing it.