Fans of Avengers are rejoicing as Marvel has released concept art posters for Joss Whedon's "Avengers: Age of Ultron." The movie posters were revealed at the San Diego Comic-Con this week. There's more to cheer for because the entire cast of the blockbuster film will be coming to Hall H during the huge panel of Marvel Studios on Saturday.

Although the premiere of the movie is about nine months away yet, it is highly likely that the studio will be showing some film footage during Comic-Con. If you are in the area, you still have until Sunday to visit the convention.

According to Screen Rant, Marvel released two of the concept art posters for Avengers 2 on the first day of Comic-Con, one showing Elizabeth Olsen's character, Scarlet Witch. The other released poster showed Robert Downey Jr.'s Iron Man. Both of them are battling Ultron's huge robot army and it seems like they are not in a very good situation.

Following the release of the first two concept art posters, Marvel revealed an additional two on the second day, that of Captain America and Black Widow. Like the first two characters, Black Widow and Captain America are shown in the midst of fighting the metal-clad robot army of Ultron.

And to the delight of fans and the convention attendees, two new concept art movie posters have dropped. This time it shows Quicksilver, played by Aaron Taylor-Johnson, while the other one shows Jeremy Renner's Hawkeye. Hawkeye is engaged in a hand-to-hand combat against the robots, while Quicksilver is dashing around to fight them. Vision, played by Paul Bettany, is seen floating or flying in Quicksilver's poster.

Eagle-eyed fans of the movie franchise are speculating that these concept art posters will form part of one huge movie poster, which will be revealed later. They have noted that at the bottom of Scarlet Witch's poster are two of Hawkeye's arrows, part of which is also shown in Hawkeye's own poster.