Early last year, Marvel and Disney XD announced a new programming block — Marvel Universe — would begin airing on Disney XD. The block would be comprised of the new Ultimate Spider-Man animated series and the second season of The Avengers: Earth’s Mightiest Heroes.
A year later, Spider-Man has been renewed for another season while The Avengers has been cancelled. Marvel confirmed that there won’t be a third season in a print statement.
The second season of The Avengers: Earth’s Mightiest Heroes debuted on April 1st and is currently running on Disney XD. Of the 26 episodes that were ordered for season two, only eight have aired in the US thus far.