The future of the group was thrown into doubt in early February when Wentz confirmed the "Dance, Dance" hit makers were taking a break -- although the hiatus could become permanent.
In a post on Twitter, he wrote, "I don't know the future of Fall Out Boy. ... A hiatus is forever until you get lonely or old. I don't plan on either."
Frontman Patrick Stump, who is working on a solo album, fueled rumors the band was no more when he declared he was no longer in the group.
He told Spin.com, "I'm not in Fall Out Boy right now. ... Whether we play again or not, I don't know. If we do it, it will be for the right reasons. If we don't, it will also be for the right reasons."