The illustrator for the famed Full metal panic! Series, Shikidouji, Sent out a tweet that Full Metal Panic! Season 1 will be getting 3 films with all 3 having a director's Cut. There is no word as to what will be added to all 3 films. Shikidouji dropped the news on wednesday on twitter.
(The picture of the announcement with Shikidouji saying "「フルメタル・パニック!」アニメ第一シリーズ、ディレクターズカット版が、劇場3部作制作決定しました。")
Full Metal Panic was also announced to get a new season just recent called Invisible Victory and was to be released this fall. But, the anime was delayed to 2018. No Word on the release date of the trilogy and if it will also contain it's other Season's Full Metal Panic Fumoffu and Full Metal Panic The Second Raid.