The 1.3.7.2 Public Beta patch is a cumulative patch for Battlezone II that includes a number of fixes and new features, such as Windows Vista/7/8/10 compatibility, DirectX 9 graphics, networking moved from Gamespy (where support has been terminated) to RakNet, integrated voice chat in multiplayer games, over 140 maps for multiplayer installed with the patch, stability improvements, and a lot of other fixes and features.

More informations you can find in Public Beta readme in the zip-file.