Full Metal Panic! Invisible Victory just finished airing. The season adapted three of the remaining light novels. As assumed by most of us, each light novel arc was turned into four episodes. Those included the books ON MY OWN (ep 1-4), ONE MAN FORCE (ep 5-8) and MAKE MY DAY (ep 9-12). This leaves three more light novels. Namely NICK OF TIME and STAND BY ME 1+2 (there's also the skipped Light Novel VERY MERRY CHRISTMAS). As mentioned before, NOT and SBM 1+2 will likely make for the final 12 episodes. Will we get those? Unknown.