It's probably not connected to Trials of mana. But i don't know enough about the series to judge that, but the producer said this:

“I am delighted to finally be able to reveal Visions of Mana, the first mainline instalment to Mana series in over fifteen years,” said Mana series Producer, Masaru Oyamada. “The development team have been working hard to ensure that Visions of Mana remains faithful to the series that players know and love while also offering fans and newcomers a fresh new experience with an all-new story, characters, and gameplay mechanics. We cannot wait to share more details about the game with you soon.”