Air planes still fly and vehicles still drive ,guns still shoot.Every thing else has changed.HiTech
The free open beta version adds many major new elements to the long-running game. A completely new graphics engine and a new sound engine headline the new version. New features of these engines include: • Continuous terrain Level-of-Detail (CLOD)• Terrains that exceed a quarter-million square miles.• Terrain smooth self-shadowing gives life-like vistas• New high resolution terrain mapping• Real-time environment mapping• Atmospheric light scattering with realistic haze layers• An accurate celestial star system complete with real dates and moon phases• Award-winning SpeedTree® vegetation rendering system on an unprecedented scale.• Completely new ships, airfields and ground objects• A new from the ground up custom graphic engine• FMOD® Sound System• All new sounds including multi-channel recordings of authentic World War 2 aircraft• New environmental background soundsIn addition to large-scale open arena play and historical re-enactment scenarios, a new mission system can put players right into the start of air battles ranging in size from 1v1’s to huge air battles with hundreds of planes in either player-vs-player, or player-vs-AI configurations. New alternate game play modes such as Capture-the-Flag and Last-Man-Standing are also supported.
I do recommend listing your dxdiag.txt here before attempting to download beta. Some systems that are able to run AH2 are not able to handle the GPU workload of beta and eventually AH3.