It sounds like the folks behind the film adaptation of arcade classic Rampage are really serious about making it happen. The Hollywood Reporter calls it "a priority for New Line Cinema" and says they're looking to make "an Independence Day-style picture on a smart budget."
Heavy Rain was announced way, way back at E3 2006, which was the week of May 8. One week after the show, May 15, 2006, the U.S. Copyright Office recorded an option for the film rights to the game.