Announced yesterday evening at Otomo's panel at Anime Expo, Akira will be reborn across two different initiatives: first, an ultra-HD remastering of the original movie, which is set to release on blu-ray in Japan on April 24, 2020, with a western release coming at a later date
Otomo also announced that work has begun on a new anime "project" at Sunrise based on the original manga. According to Anime News Network, it'll be a TV series rather than a new movie, and the project is deliberately not a sequel to Akira, but instead a continued re-adaptation of the manga it was based on. The adaptation hopes to encompass the entirety of Otomo's original manga—something the movie couldn't do
Guess I'm quadruple-dipping.