Serbian Defence Minister Aleksandar Vulin told media on 29 December that work has resumed on the upgrade of the Soko G-4 Super Galeb single-engine advanced training and light attack aircraft. No further details were provided.
In March 2018 the Serbian Ministry of Defence (MoD) presented the G-4 upgrade at the second Southeast Europe Aviation Summit (SEAS) in Belgrade. The upgraded Super Galeb, designated ‘G-4MD’, will feature updated avionics and an integrated navigation/attack system, which, in combination with an increased payload capacity, will allow the integration of more versatile weapons, including air-to-air and air-to-ground missiles. In addition to reducing pilot workload, the upgrade will focus on advanced training features, including mission planning, debriefing, and virtual training.