Here’s the buzz about Transformers 2 from Wikipedia:
Transformers: Revenge of the Fallen is an upcoming science fiction/action film due for release on June 26, 2009. It is the sequel to 2007’s Transformers, which was the first live action Transformers film. Michael Bay and Steven Spielberg return respectively as director and executive producer, while Shia LaBeouf reprises the role of Sam Witwicky, the human caught in the war between Autobots and Decepticons. The film introduces many more robots and the scope has been expanded to numerous countries, the most important of which is Egypt.
The main hurdle in getting the film produced was overcoming the 2007–2008 Writers Guild of America strike, as well as possible strikes by the Directors Guild of America and the Screen Actors Guild. Bay met his shooting date with the help of previsualization and a scriptment by his writers Roberto Orci, Alex Kurtzman, and series newcomer Ehren Kruger. Shooting from May to November 2008 predominantly took place in the United States, including the majority of scenes set in outside countries, a minimum of which was conducted in those actual nations.
And here is the teaser poster and some production photos:
Video Link: Transformers 2 Teaser Trailer