News from April 2019
Still speculative, but it was reported today that the body responsible for age-rating games in South Korea (known as the Game Rating and Administration Committee of Korea) has given a rating for PCs for Octopath Traveler, the Square Enix Switch RPG. The publisher of record is Bandai Namco, who according to Gematsu regularly act as the Korean-locale publisher for Square Enix games.
There is always the chance that this could be an erroneous listing, but typically news such as this from a game ratings board is always followed by an official announcement or an actual release of a game. Given further that the game was originally developed in Unreal Engine, a PC port seems like an obvious next step as well. Keep your eyes out for more news soon.