There was a few mixed details regarding when the trial version would indeed be released and it seems that a new update (1.03) which is said to of fixed several key issues has been deployed
Regardless it would seem that it is now playable and several new gameplay videos taken from the trail version has been released onto the internet, you can see them below..
Stranger Of Paradise: Final Fantasy Origin was announced several days back during E3 2021, it is said to be a ‘bold new vision to the series’ bringing various references from the first Final Fantasy including the Warriors of Light and Garland. It is also said to feature Souls-like gameplay
SOURCE: IGN Japan
SOURCE: Playstation Japan