Update (2018-12-30): At the end of the “Dark Sun…” broadcast, additional information was released.
***
Images have surfaced indicating that a follow-up to Persona 5 the Animation titled “Stars and Ours” will air in March 2019.
“Stars and Ours” is likely to be a special broadcast covering the final segment of the game, following the “Dark Sun…” special broadcast which airs today.
At the end of “Dark Sun…”, a trailer for the new special episode was released:
Synopsis
The politician who was the mastermind behind all of the cases has been successfully reformed by the Phantom Thieves. However, the public’s reaction was not as expected. In order to eliminate the world’s distortion and enforce the justice he believes in, Ren proceeds towards the final battle along with the Phantom Thieves of Heart.
The article for it has been posted on the official website.
Produced by CloverWorks, Persona 5 the Animation is a 26-episode anime adaptation of Persona 5 which debuted on April 8, 2018 and ended on September 30, 2018. A special 1-hour broadcast titled “Dark Sun…” will air today on December 30, and a “Stars and Ours” episode will air in March 2019.
— Moetron