IIRC I remember reading an article about tabata saying they working on a US release, so in a way they have already unofficially announced it (or that's what I keep telling myself anyway) The question is.....when?
Now regarding Europe, if anywhere it would be announced at Gamescom
To answer your question yes I think so
Waiting for: The Last Story, The Last Guardian, Ni No Kuni, Tomb Raider, FF Versus XIII, FF Type-0, FFX HD, VF5:FS, DOA5, TTT2 and P4 Arena.
You do know that E3 isn't exclusive to North America. Just because it takes place in the states doesn't mean it's limited to it. It's a worlwide gaming convention. Japanese developers announce their titles there as well.