FROM: High Command
TO: Arma 3 Users
UNIT: Main Branch (Windows)
ACTIVITY: Game Update 2.20 (Performance Optimizations, Steam Game Recording, UH-80 / AH-99 Stub Wings, Illumination Flares)
SIZE: ~127 MB / ~57 MB (depends on Arma 3: Contact ownership)
More in the full changelog and SPOTREP