This is International Update for all versions released so far: 1.0, 1.01, 1.02 and 1.04 - ArmA English. Not for the Euro version released by 505 Games.
Version 1.05 new features and improvements since version 1.04:
Gameplay
. grass is now simulated for AI and multiplayer
. STOVL support
. improved 3D irong sights
. improved satchel simulation
Campaign
. various improvements and bug fixes across all campaign missions
UI
. overall polish and streamline of menus
. new modern GPS device enabled for some vehicles and situations
. satellite texture can be displayed in the main map
Controls
. improved stability of helicopters
. extended support for keyboard shortcuts
AI
. general AI tweak and improvements
. more realistic AI target detection
Multiplayer
. improved MP browser
. improved voice over net
Compatibility
. all versions possible to upgrade to 1.05 level
. English subtitles enabled for Czech and German versions
Version 1.04 features summary
. AI pathfinding improvements
. AI combat improvements
. Several dedicated server stability issues fixed
. Terrain Detail Very Low disables grass rendering
. LOD blending on vegetation for smoother visual transition
. New content: Su-34 Fighter and Su-34 Bomber, TT650 and M1030 military motorcycles, AKS74PSO, KSVK, M107 and M16A4