Avengers 2 called The Age of Ultron

The Avengers 2 will be called The Age Of Ultron, now what you might have got from the title yes it is does say Ultron so you might have guessed yes he will be the new Avengers enemy. so what do we know about Ultron he a robot that is created by Ant Man AKA Dr. Hank Pym for good but Turns against Him and the Avengers, also had a interested in Hank Pym's girlfriend WASP, calling Hank Father but as we know so far Ant man wont be involved in the Avengers 2, so the Question is how will Ultron be created at the moment we know that it will come from one of the all ready members of the Avengers. The favourite to create him at the moment is Iron man that could possibly happen but it could also be a Shield creation instead because Ant man was apart of Shield as well or Captain America, that could Explain Ultron in Captain America the Winter Solider or he could also make a cameo in the film.