Atlus US updated their YouTube page with a new video for Persona 5, specifically detailed as the E3 trailer for their upcoming game. Unfortunately, it is not a brand new video, nor is it a new video. It's actually the debut video from February 2015.
There are two differences, the two Japanese phrases at the beginning of the debut trailer are now in English.
If you missed the debut, you can catch it in the "new" trailer above. The trailer shows off four main characters, game art, cutscenes, combat, combat outfits, a new mascot, and more. There's enough in here to make your hype reach unreal levels (if you're a fan of the series).
Persona 5 is set to be localized and released in the Americas on the PS3 and PS4 this year.