So, yeah, P4U will be playable at some dumb anime con this april. 
 
Arc systems/Atlus specifically asked the organizers if they could show the game off. They would have no reason to do this if the game wasn't going to reach US shores, right?
 
Well, its not like there's any doubt it will be brought over anyway...We're talking about Atlus here.
 
Case in point.

I think they'll bring it over here. Persona 4 did well in North America selling 300,000+ here I believe.

Atlus + 360 + Persona = guaranteed to come to US and eventually Europe & AUS

Atlus + 360 + Persona = guaranteed to come to US and eventually Europe & AUS

That linked event is a month before E3 2012, so chances are good it will be there, too.  We might get some video of the staff playing the game next year.

There is no doubt, they will bring this game over here as well as Persona 4 The Golden. The real question is whether the game will release in North America at the same time as the Japanese release.

The Persona games are one of Atlus's most popular series in the west. Trust me, if it has Persona in the title, there's a pretty good chance we will get it.

It will come. It has to come.

A little surprised it'll be showing up first at an anime con, but as everyone's said, this isn't unexpected at all.

EVO 2012 GET HYPE!!!

@Cathryn said:

A little surprised it'll be showing up first at an anime con, but as everyone's said, this isn't unexpected at all.

Well the P4 localization was confirmed at an anime con during an Atlus panel on P3.

I expect it'll show up in other places since it is a fighting game with a already proven system. I feel they should put it up at EVO to see how fighting fans feel about what this system is like.