I'm about to air my opinion here, so if that's not something you'd like to read just skip over this:
I've heard from a few different sources that MF is out of the casting for Transformers3. To me this really isn't much of a big deal. I wasn't even planning on seeing T3 in theaters anyways. Trans2 was quite a disappointment of a film to me and I really only enjoyed the first. I feel they could've left it as a standalone film and I'd have been content. I don't even like any of Michael Bay's other films anyways.
If Megan can keep her mouth shut (something that comes with age and wisdom) she'll get more movie roles and come out better for it. I think she's got a little more going for her than Lindsay Lohan, but what do I know...
......ah, venting complete