Quote:

Actually Optimus' voice is the original actor's.



Same with Megatron.

According to the script (which hopefully won't be followed in its entirety), only the Autobots speak english in order to communicate with Humans. Decepticons could give a shit less - they speak their native tongue (this may be changed to some degree I hope). Also, the movie is mainly from the human POV, introducing the Transformers, rather than from the Transformer perspective and introducing the humans. I'm hoping that this is due to trying to attract non-fans to watch the movie. If the movie is at least half decent, there will be a part 2 and I hope the POV shifts towards the Transformers' because we already know a lot about humans....=P