Yesterday an incredibly cool teaser trailer for Transformers: Age of Extinction was released, and if for some reason you haven't seen it yet, you should watch it now. Michael Bay has now released a character poster for Optimus Prime that you can see above. There is also a viral poster that you can see below that tells us "Transformers Are Dangerous."
The viral poster was part of the trailer. At the beginning of the trailer there's a billboard saying “Remember Chicago,” which is a reference to the insane destruction we saw in Transformers: Dark of the Moon. The billboard features a phone number, and that number leads to the website www.transformersaredangerous.com, which takes us to the Transformers viral poster you see below.