Release date: TBD
“Metroid Prime 4 news – what’s the latest?
E3 2018 has been and gone without a mention of Metroid Prime 4. So what’s going on with it? In a recent interview with Game Informer, Nintendo’s Reggie Fils-Aime said that Prime 4 is “still in development and proceeding well” despite radio silence.
‘Last year was important to us to message to the Metroid fan that there was a Metroid Prime experience in development, as we showed Metroid: Samus Returns for the 3DS. We didn’t want that fan to say “You just launched a new system, when are you going to bring me a Metroid on that platform?” We said it was coming. This year, with so many games launching effectively between [now] and the first half of next year, we wanted to focus on those games. Rest assured, Metroid Prime 4 is still in development and proceeding well.’”
Read more at https://www.trustedreviews.com/news/metroid-prime-4-release-date-gameplay-news-trailer-characters-story-preorder-2993245#wkcKweSdvrwMV25j.99
“Metroid Prime 4 was briefly announced via a logo shown during Nintendo’s E3 2017 broadcast. During a media pre-briefing, journalists asked Nintendo exactly who was behind the game. Nintendo declined to reply, except to say that Retro Studios, which created the original Metroid Prime Trilogy, was not behind the project.
Since then, speculation has been rife over who was working on Metroid Prime 4, but nothing more has been announced about the game since.” –Eurogamer.net