It's the same version as the beta, but now official: version 4102 (Win32) and 3103 (for Linux) of the Half-Life server. If you're a client, you dont need this release. Get the win32 file from Shack, TFTribune or Fileplanet and the Linux version from da Shack, here or here. These are upgrades, so you need 4101 already. Thanks PlanetFortress.