Harvey Elliott, head of EA's Bright Light studio, told VideoGamer that he "wouldn't rule anything out, never say never." He said that Boom Blox is "about the motion control, it's about throwing a ball or throwing an object," and that right now, he "can't imagine that on other devices at the moment." Despite saying that a multiplatform release wasn't impossible, Elliott is "proud" that it's remained on the Wii so far, saying, "I think it's the right thing. Who knows for the future." So it's more of a "maybe, I guess" kind of thing than "CONFIRMED."
Since the release of the last Boom Blox, two new motion-based interfaces have been introduced, both of which allow players to mimic the motion of throwing an object. Project Natal would actually allow the player to throw a real ball at the TV, if that player is stupid enough to think that's a good idea.