Fans cannot wait for the next installment of their favorite superhero team-up, "Avengers: Age of Ultron," and producers have been kind enough to not leave supporters in the dark, even letting students snap photos once during a shoot on their school grounds.

In recent social media fan posts, Thor (Chris Hemsworth) was seen with his hammer, although what he was doing in the scene was not revealed. Marvel has been no stranger to speculations and rumors, since it has released or will release four big superhero films this year: "Captain America: The Winter Soldier," "The Amazing Spider-Man 2" and "X-Men: Days of Future Past" have already opened, with "Guardians of the Galaxy" opening Aug. 1.

Rumors are that Iron Man (Robert Downey Jr.) may be playing Iron Man for the last time. However, other reports have said he would not be leaving a role that seems to fit him perfectly. Sources have also disclosed that Iron Man will be wearing the Mark 43 and Mark 44 suits in the next Avengers team-up. Mark 43 has less gold than Mark 42, while "Mark 44 is the Hulkbuster armor."

On the other hand, the Hulk (Mark Ruffalo) is set to be given a deeper portrayal in his new role. Ruffalo said himself that the green hero needs to go solo again, regardless of his fate in the Avengers sequel. Since Ruffalo replaced Edward Norton as Bruce Banner, fans and movie critics have questioned the future of The Incredible Hulk. His role in "Avengers: Age of Ultron" may this be given special attention, including new personal conflicts to set the stage for the character's outlook in the longer run. The character may just have another solo film waiting for him, depending on how things work out.