Credibility: Fantastic track record when it comes to information about upcoming Atlus projects. Most recently, the user in question has accurately leaked the Persona 3 Reload title / announcement date, Persona 5 Tactica title and gameplay, Persona 5 Tactica DLC with Kasumi and Akechi, Persona 5: The Phantom X, and more. TLDR, if they say it, it's gonna happen.