GameStop is currently listing Dual Hearts with an August 1st release and Atlus as the publisher. While retailer release dates are usually not the final date, they are a fairly good indicator that a game is coming stateside.
When contacted, however, an Atlus representative stated, "No comment," followed by, "All will be revealed at E3." And we were worried Atlus would have nothing to show! Silly us for doubting.
Dual Hearts was released in Japan on February 14th, and was developed and published by Sony of Japan.