The Hollywood Reporter is, erm, reporting that Transformers 2 has been shunted from its June 26th 2009 release date. There's no confirmed reason given, but it wouldn't take a genius detective to surmise that the ongoing writer's strike could stall the movie. Transformers 2 is said to have a script, but unless that script is absolutely locked, then the movie can't go ahead, as no changes can be made.
On the plus side, director Michael Bay has posted on his blog with a little update on the movie. He's said that "the new robots are really really unique* and there are a lot of them this time". Since the bits with the robots were by far the most enjoyable parts of the first movie – with the segments featuring the fat dude and Australian girl by far the worst – then this is very good news.
*There are no degrees of uniqueness. Something is either unique – meaning one of a kind – or it is not. This is just a bugbear of ours.