Legendary just announced a new collaboration with Sunrise at Anime Expo 2018. Gundam will get a live-action movie.
There are not many details at this time, and a press release by the studio says no story details are being revealed right now. It does, however, include a brief synopsis for the premise of the original anime series and its setting in the “Universal Century,” the main timeline that many of the dozens of Gundam anime, mangas, and video games have been set in:
The original Gundam series is set in the Universal Century, an era in which humanity’s growing population has led people to emigrate to space colonies. Eventually, the people living in the colonies seek their autonomy, and launch a war of independence against the people living on Earth. Through the tragedies and discord arising from this human conflict, not only the maturation of the main character, but also the intentions of enemies and the surrounding people are sensitively depicted.