If it doesn't leak,
Feige on when we'll see it:
You didn’t make it to San Diego Comic-Con this year, so you weren’t able to see the The Avengers: Age of Ultron footage shown in Hall H. But you tracked the panel at home using social media, you read the descriptions of what was shown, and you are DYING to know when you will finally be able to see it with your own eyes.
I have mildly bad news for you.
"Not for a while," said Marvel President Kevin Feige, who sat down with us for an exclusive interview about all things Marvel at Comic-Con. When I mentioned how buzz swirling out of Hall H usually excites fans tracking a movie’s details from home, he admitted that a trailer or footage for Joss Whedon’s The Avengers: Age of Ultron wouldn’t be coming to theaters or the Internet until "later, much later."