While the final full volumed novel of Full Metal Panic! written by Shoji Gatoh ended on August 2010, the 15th volume of the manga adaptation, Full Metal Panic! Sigma, released earlier this week announced a new novelization for the series.
The new story will take place roughly 10 years after the events of the original series and will be written by Naoto Oguro while Shoji Gatoh, will supervise. Kanetake Ebikawa, the mechanical designer for novels posted an image for the project on his twitter.
Source: Yaraon