Gematsu has uncovered a teaser site for Brigandine: Lunasia Senki, which was recently trademarked in Japan by Happinet Games. The teaser site has today updated with a new image with a description in the source code, indicating a new title is on the way for release on Nintendo Switch. The image and description can be found below, as translated by Gematsu.
The endless battlefield fantasy, country-takeover simulation game Brigandine: Lunasia Senki will be released for Nintendo Switch as a completely new title by new developers!
Note: A PS4 logo can also be found on the website, but it is not mentioned in the above description.
Brigandine was originally a strategy game for PlayStation with some RPG elements that released in North America in 1998 as Brigandine: The Legend of Forsena, localized by Atlus USA. A Grand Edition released in Japan two years later in 2000 with various additions including multiplayer, but this version was never localized.
It's very likely an official announcement will come on or around this year's Tokyo Game Show in September, so we'll have to wait and see what this unexpected franchise revival will shape up to be.