Super Neptunia RPG delayed to spring 2019, originally to release this fall, for the Nintendo Switch and PlayStation 4. As for why the game is pushed back for more than 6 months, that remains a mystery.
The game is being developed by Artisan Studios, a Canadian-based studio. The date is still scheduled for Japan on September 27, 2018. While details are scarce, this could be more time for translations is needed or additional bugs to be fixed, even after the release in Japan. Aside from the delay, Idea Factory International has released an animated video of the game, which can be viewed below.
You can view the official site here and get ready for some classic RPG action come spring in 2019 for the PlayStation 4 and Nintendo Switch.
Source: Idea Factory International PR