There appears to be a major Transformers movie casting update, released by IGN. Lots of new [anticipated] cast members named in addition to Shia LaBeouf, including Jon Voight, Michael Clarke Duncan, Josh_Duhamel, Bernie Mac, Tyrese, John Turturro, Rachael Taylor, Megan Fox, Travis Van Winkle, and John Robinson.
(via Transformers movie boards).