Until they convince Michael Bay #4 is a good idea. Or they get a different director and reboot the series. Movies are getting to be about like pictures on Facebook, once it's out there, it's out there and you can't end it. I have a feeling that this won't be the last Transformers movie line of toys. I think we'll see them again, maybe not within the next five years but they'll be back. Whether it's a brand new movie series, in a different continuity/universe or the same ones back again, I highly doubt that this will be the end of it.