You've always wondered why Xehanort become the Seeker of Darkness? This "Project Xehanort" should answer your question!
The real name of the mobile game is not yet known, but it's currently the subject of a competition in North America and Japan. Players have until January 28th to try to guess it, as it consists of eight letters and two words. As for the game itself, there is little information at the moment. The official website simply states that it will contain microtransactions and that it will be available in the spring of 2020 on iOS and Android.
Square Enix takes this opportunity to reassure players of Kingdom Hearts: Union X, the other mobile game in the saga, which will continue to receive updates over the coming months.