On Monday Marvel announced that it would unveil the trailer for its next superhero blockbuster, Avengers: Age of Ultron, following next week's episode of Agents of S.H.I.E.L.D. However, all of the studio's careful planning went straight out of the window yesterday when a leaked version of the trailer started appearing online. Realising that it had to take action quickly, Marvel has responded by releasing the official version of the trailer (in all of is full-screen 1080p glory) earlier than planned. So sit back and enjoy...