Fourth "Transformers" Film Happening With Or Without Bay!

Hasbo CEO, Brian Goldner announced that they are already planning a "Transformers IV" and they plan to make it with or without Michael Bay sitting in the directors chair. He said that they're not just planning a fourth film, but they're actually planning a whole "new trilogy". AWESOME!!!!!
There is no word on wether Shia LaBeouf will return or not. The studio might just start fresh and create some new lead characters. As long as Josh Duhamel returns as the Transformers amry friend, then I'm cool with that.
If Bay doesn't return as director, I wonder who will take over? I think it should either be Rob Marshall, Zach Snyder, Darren Aronofsky or even Spielberg himself, rather than him being only the producer.