Persona 5 is releasing early 2017 and will be fully translated into English like past Persona titles. Like past Persona titles though, it will not have its JP Dub at launch. This is sad news for fans who did like past English Dubs from the Persona series but they did comment on the fact it might be possible that the Dub can be post-launch DLC.

Other JP games like Neptuina Rebirth 3 did this with their JP Dub (Free DLC) due to space related reasons. So, their is a chance it is still coming. More on this as the story develops.
Source: Silliconera