I had missed the scheduling information previously but Kadokawa is handling the home video releases for the spring 2018 anime series Full Metal Panic: Invisible Victory.
Osamu Horiuchi (Full Metal Panic!, Full Metal Panic! The Second Raid) returned as the character designer and chief animation director and Aya Yamamoto (animation director for My Teen Romantic Comedy SNAFU TOO!) was the sub-character designer.
FUNimation have since released the original series as well as the Fumoffu series in priced-down format.
ADV Films and FUNimation previously released the anime material with FUNimation currently holding all the rights for it.