A western release of 13 Sentinels: Aegis Rim is also planned, but has yet to receive a release date.
Before the full release, users can play the first three hours of the story and control all 13 main characters via the 13 Sentinels: Aegis Rim Prologue due out on March 14 in Japan. It will be available digitally via the PlayStation Store for 980 yen, as well as physically via the 13 Sentinels: Aegis Rim Music and Art Clips package for 2,980 yen.
A download code for 13 Sentinels: Aegis Rim Prologue is also included with the Odin Sphere: Leifhtrasir and Dragon’s Crown Pro New Price Version Campaign Packs due out on March 14 for 3,980 yen each.
Save data from 13 Sentinels: Aegis Rim Prologue cannot be carried over to the full release. Read more about the buying options here.
Thanks, Dengeki Online.
Update 03/12/19 at 5:00 a.m.: It appears Dengeki Online published this story ahead of its planned publishing time, as it has been removed from the website. However, searching through the Google search feature on the website still locates the article and displays the text confirming the release window.
Update 03/13/19 at 11:15 p.m.: Atlus has officially announced that 13 Sentinels: Aegis Rim will launch for PlayStation 4 this fall in Japan. Watch a gameplay video of 13 Sentinels: Aegis Rim Prologue featuring freelance writer Mafia Kajita below.