Persona 4 Arena will be out in a couple weeks, and we've got a new "full" trailer to show off -- as opposed to "partial." No, we're not really sure what makes it so full, but it's a good video anyway.
In a way, the video encompasses everything we've seen and heard about Arena thus far, showing us a bit of the story, the fighters/characters, the artwork, and a few new features. Don't pretend you're not excited.
Recently, it came to light that Arena would be region-locked (a PS3 first), though ATLUS was quick to respond to concerned fans. You can still read their open letter in full, which attempts to explain the reasoning behind the unusual decision.
Full trailer - YouTube