In 2 years, Takahashi will release a new video about MP4 :Takahashi said he wants "Metroid Prime 4 to stand shoulder to shoulder with the first 3 games" and Nintendo has showed how important Metroid Prime is to them and for the fans. Tanabe is coming over to Retro to continue leading MP4. Not sure why people would be worried.
"We decided to cancel Metroid Prime 4, Retro Studios wasn't able to create a game that felt like a true, good Metroid Prime experience. Also, we've decided to close Retro Studios. They have been unable to release a single game in 7 years, fuck them, they have costed us more money than NST."