Russia’s state-owned aerospace industry — led by United Aircraft Corporation (UAC) and Rostec — has delivered a new batch of Su-57 fifth-generation stealth fighters to the Russian Aerospace Forces (VKS) for 2026 service. These jets are reported to feature a revised technical configuration with upgraded onboard systems, enhanced avionics and expanded weapons capabilities, although the exact number of aircraft delivered was not officially disclosed. The updated Su-57s are intended to improve combat effectiveness and operational flexibility, reinforcing Russia’s advanced fighter fleet despite earlier production challenges and Western sanctions.