Avengers Age of Ultron Trailer + review

Hey guys,
I am not sure this was an intentional release from Marvel or if this was simply leaked by someone on the Internet but I have found the official trailer of Avengers Age of Ultron which will be released in theaters in April of next year.
Here's the trailer

I enjoyed almost all Marvel movies to this point except for Guardians of The Galaxy but I've always been critical of the fact that these movies never had a serious tone. Well, there you go, this trailer has a very serious and dark tone. It looks like the Avengers will face a true villain this time who will create not only conflict within the team but a villain who will show the fans of the Marvel Cinematic Universe that heroes do not always win and when they do it comes at a price.
The trailer is very intense and it shows the rise of Ultron from Tony Stark's house. Needless to say that the best part of this trailer was that we got to see the Hulkbuster armor that supposedly Tony Starks builds to fight The Hulk. The Armor is even bigger than the Hulk himself and I wonder how it works. Do you guys think that the armor will be able to fly? If so, it could allow Tony Stark to fly only for a limited time and possibly not that fast or that high
.
If you weren't by any chance excited for this movie, now all of you must be.

Which part was your favourite and what did you think of the Hulkbuster?
Let us know below
-theheroblogger