Earlier today, folks started posting screenshots suggesting that Atlus Japan had accidentally revealed whatever they're going to announce on May 5th (there's a countdown and everything) early. That reveal lists Shin Megami Tensei: Persona 5 for a simultaneous worldwide release on PS4 and PC (no mention of the PS3).
Within the hour, though, a new message popped up, encouraging Atlus to change their passwords.
Suggesting, naturally, that Atlus's site was broken in to for shits and giggles. Or that Atlus is attempting to make it look like they were breached to cover up the leak, 'cause that's better maybe?
Either way, the site's back to normal now.