The Japanese government launched the FLAGPSHIP 2020 project in fiscal year 2014 with the following mission:

RIKEN is in charge of co-designing the post K computer and developing applications in collaboration with the Priority Issue institutes selected by the Japanese government, as well as conducting research aimed at facilitating efficient utilization of the post K computer by a broad community of users. Under the co-design concept, RIKEN and the selected institutions are closely collaborating.

Fugaku, the name of the flagship supercomptuer, is announced on May 23, 2019. The information, we already announced, still use the name post K at this moment.