An earlier report about the upcoming Wakanda campaign for Marvel's Avengers said that the new content would take players about 25 hours to complete. This report, presented by Entertainment Weekly, claimed that the 25 hours would be in addition to the content available in the base game.
Unfortunately, that seems to be a misinterpretation by the person who wrote the article. Square Enix clarified what was actually meant by this "25 hour" remark....