We are hearing rumors that the new Falcon and Winter Soldier Disney+ show is setting up the Thunderbolts.
Notable first appearance of the Thunderbolts is in Incredible Hulk #449. Which is the original team created.
During their original formation, the Thunderbolts appeared to help protect the world after the Avengers were presumed dead after the Onslaught crossover event.
It was later revealed that they were villains. There have been several other iterations of Thunderbolts. It will be interesting to see which Thunderbolts Marvel brings to the series.