In an interview with Destructoid, the developer explained its apparent snub on the platform. "Cyanide is a small company," a representative said. "We have no previous experience on that platform [and] it would have been a bit risky and expensive for us. But, we are hoping to do a PS3 version if the game is selling well."
So, rather than a lack of faith in the platform, Cyanide has somewhat of a lack of faith in its own ability to develop for it without killing the budget. It still means no PS3 version for now, but it also means no janky, poorly ported PS3 version for now. That's ... something. And if the other versions of the game, coming out in Q2 of this year, are successful, we may see a (good) PS3 version yet.