I agree with Sdashiki --- this preview looks crap, and it doesn't look like Transformers at all. This is essentially a movie about robots landing on earth, except they're using the Transformer name as a way to sell it.
The characters are there, the foundation of the storyline is there, the concept is there, it's about the same sides, the attitudes of the main characters are there..why/how does it not look like a 21st century, live action version of Transformers?
I'm going to watch it anyway, but I really don't think they needed to call this movie "Transformers." They could have called it something else and saved us fans the pain of watching the Transformer story butchered.
Remind us again how it's been butchered? Did it not get completely butchered with all the crap versions after the original series? Seriously, imagine if they'd made a film of transformers Beast Wars? Now that would be a travesty.
And I really hope to hear robots talking, and not too many humans.
I guess you'll be disappointed in the fact that the original Optimus Prime is voicing Optimus Prime. They really stuffed up there...