UPDATE: 12/16/17: Embedded the promotional video now that it is up on YouTube
A promotional video was released today which states that Sui Ishida’s Tokyo Ghoul:re anime will air in April 2018. The original announcement was made back in October with a vague 2018 release time window. That window has now narrowed down to the spring anime season! Additional information such as an episode count are unknown at this time.
MyAnimeList.net describes the story of Tokyo Ghoul:re as follows:
Two years have passed since the CCG’s raid on Anteiku. Although the atmosphere in Tokyo has changed drastically due to the increased influence of the CCG, ghouls continue to pose a problem as they have begun taking caution, especially the terrorist organization Aogiri Tree, who acknowledge the CCG’s growing threat to their existence.
The creation of a special team, known as the Quinx Squad, may provide the CCG with the push they need to exterminate Tokyo’s unwanted residents. As humans who have undergone surgery in order to make use of the special abilities of ghouls, they participate in operations to eradicate the dangerous creatures. The leader of this group, Haise Sasaki, is a half-ghoul, half-human who has been trained by famed special class investigator, Kishou Arima. However, there’s more to this young man than meets the eye, as unknown memories claw at his mind, slowly reminding him of the person he used to be.
Tokyo Ghoul:re Promotional Video