If Waninkoko is on it then it’ll definately happen. It took him a while to create all the fake portions of the Wii firmware and the PS3 is much harder to code on. I don’t know the current homebrew status of the PS3 but I do know that most of the Wii’s security had already been broken by Team Twiizers and that made it considerably easier to allow pirated games to be played because they had all the hardcoded encryption keys needed to run unsigned applications.
Sony cares a little more about security than Nintendo did and I’m sure does a little more to protect their hardcoded encryption keys.