It would seem Kourin and Ibuki are sticking around in V.
The new season starts May 11th, 2019
Its tagline is “Their fates cross once again”
And it’s noted the season has Akira Itou in charge of its direction and premise, as it continues the story of the cast from the comic book.
Also, the source tweet notes there will be a reveal of the general intended direction of the new season and the like during a stream on April, 18th 2019.