IFI has recently announced the localization of Ninja Taisen Neptune during the Online Summer Festival.
Here's the trailer for said game:
And here's the official website:
http://ideafintl.com/neptunia-senran-ninja-wars/
UPDATE 9/8:
IFI has announced released dates for NA and EU, slated for Oct 26 and Oct 29 respectively, with pre-orders of the LE beginning on Sep 29:
https://twitter.com/IdeaFactoryIntl/status/1435618938428301317
https://twitter.com/IdeaFactoryIntl/status/1435618932656787459