The way it should be!

Xenoblade Chronicles: Definitive Edition is going to offer up a new epilogue called "Future Connected." Those who've played Xenoblade Chronicles on Wii or 3DS who are eager to jump into this end-game content can do so right away. Nintendo has confirmed that the Future Connected epilogue is available right from the start of the game, so no need to work your way through the entire RPG just to experience the new content.

Thanks to jacktendo92 for the heads up!