Well SE just did a livestream for the Mana series in celebration of the series anniversary. What you wouldn't expect is for them to announce a bunch of new products with none of them being remakes/remasters.
Echoes of Mana is a new mobile entry in the series.No gameplay is shown, but the collage at the end has some fans speculating this game will work in the same vein as FF Record Keeper, SaGa Re: Universe, and Dissidia Opera Omni and be a game where you build parties by collecting characters from across the franchise history.
Legend of Mana: The Teardrop Crystal is a new anime series based on the game of the same name. It's unknown if it will be a retelling of the game's stories or something different, but apparently this anime was created because an executive at Warner Bros. Japan was a huge fan of the game. While we have no visuals yet, the new HD remaster opening will likely give people an idea of what the anime could look like.
Finally, SE also announced a new console entry was also in the works though it has yet to receive an official title and is likely still in the planning stages. It seems the revival the series has seen in the last few years may has jump started it again.