We learned last summer that the Fate/Grand Order project is with various projects, one of which is the Fate/Grand Order: Zettai Majū Sensen Babylonia anime set for a 2019 premiere.
We now have a new promotional video via Tweet below that reveals an October 2019 debut for the project.
Chaldea issued the Grand Order for a “Holy Grail Expedition,” to investigate, uncover, and possibly destroy the singularity that apparently will cause the extinction of humanity.
The apparent cause of the extinction was in the Japanese city of Fuyuki in 2004.