A remake of Seiken Densetsu 3 was announced during the E3 2019 Nintendo Direct. Trials of Mana will be released on the Nintendo Switch in 2020. This will be a full 3D remake of the original RPG.
Here is the Trials of Mana E3 2019 trailer.
Seiken Densetsu 3 originally appeared on the Super Famicom in Japan in 1995.