Three Fire Emblem characters (Chrom, Lucina and Robin) and one veteran (Captain Falcon) are confirmed for Smash Bros today.
All we need now are Shulk, Rayman, Jigglypuff & Ness and soon it shall all be complete! And also Falco and Ridley.
EDIT: Sadly, Chrom is now a part of Robin's Final Smash. But hey, at least he's still in the game!