Toonami announced on their official Facebook page that the English-subtitled streams of FLCL Progressive and FLCL Alternative are being delayed until November due to respect for their Japanese partners. This move was done to align with the release of the Japanese language versions. The English dub; however, is still scheduled to begin airing on Adult Swim’s Toonami block effective midnight June 3 (Saturday night into Sunday).
MyAnimeList.net describes FLCL Progressive as follows:
In the new season of FLCL, many years have passed since Naota and Haruhara Haruko shared their adventure together. Meanwhile, the war between the two entities known as Medical Mechanica and Fraternity rages across the galaxy. Enter Hidomi, a young teenaged girl who believes there is nothing amazing to expect from her average life, until one day when a new teacher named Haruko arrives at her school. Soon enough, Medical Mechanica is attacking her town and Hidomi discovers a secret within her that could save everyone, a secret that only Haruko can unlock.
But why did Haruko return to Earth? What happened to her Rickenbacker 4001 she left with Naota? And where did the human-type robot “Canti” go?