Nintendo has released a DLC trailer for Tokyo Mirage Sessions #FE. This trailer highlights all the DLC available for the English localized version of the game, as listed in this previous post.
All DLC for Tokyo Mirage Sessions #FE was made available from launch, and was also included in the Fortissimo Edition for both North America and Europe.
Tokyo Mirage Sessions #FE (previously known as Shin Megami Tensei X Fire Emblem) was released on December 26, 2015 in Japan for the Wii U. It released in North America and Europe on June 24, 2016.