UPDATE: Six Iron Man 3 stills have emerged online thanks to Facebook and USA Today, as well as a brand new Extremis-hinting teaser poster. Sit back in awe at the American-ised War Machine! Marvel ^(TM) at Tony Stark's awesome new ocular equipment! Hail a fresher, funkier version of the arc reactor! It's all here, and it's all in preparation for the new, full trailer, set to hit the web early tomorrow morning.

Given his propensity for self-promotion, it was only a matter of time before Tony Stark cottoned on to the idea of teasers for trailers. So it is that Iron Man 3 has succumbed to this most modern of marketing ideas, launching a Facebook page and encouraging fan “likes” to unlock a new glimpse of the trailer. Take a gander above.

It’s a very brief snippet of what we can expect on Tuesday, but certainly offers a few interesting nuggets, including Gwyneth Paltrow’s Pepper Potts in no small amount of agony and a very quick look from behind (what’s with this film’s promotional campaign and the back of people’s heads –see below) at Sir Benjamin Of Kingsley as The Mandarin.

Otherwise, it’s action shots: Iron Man flying against jets and choppers, landing in his lab, and talking to a crowd. Okay, not all action shots.

Iron Man 3 also features Guy Pearce, Jon Favreau, Rebecca Hall, Don Cheadle, William Sadler, Stephanie Szostak, James Badge Dale and the voice of Paul Bettany. In a similar move to The Avengers earlier this year, the film arrives in the UK earlier than it does in America, with Brits getting their Iron Man hit on April 26 and those folk over the pond only able to see it on May 3.