Byleth is released on January 29th, both as part of the Super Smash Bros.
Byleth from Fire Emblem:
Using a variety of Heroes' Relics, including the Sword of the Creator, Byleth is ready to teach foes what Super Smash Bros.
This set also includes the Garreg Mach Monastery stage, a Byleth route in Classic Mode, a DLC Spirit Board, and 11 music tracks from the Fire Emblem series!