We have released a Beta update for Half-Life: Source.
Changes in this update are:

• Added ability to run with the Half-Life 1 HD content pack. Go to the video options dialog and select "Load HD content if available" to enable this option. This HD content pack was adapted from the original Half-Life version by A. [Stone] Denisov.
  
• Fixed skyboxes not showing correctly on Xen
  
• Fixed muzzle flash from gunfire not showing
  
• Fixed Nihilanth being very hard to kill
  
• Fixed Alien Grunt armor not being taken into account during fights
  
• Fixed Apache health amount to match Half-Life 1
  
• Fixed map logic bug in c1a3 controlling the 2 sentry guns
  
• Fixed flashlight rendering incorrectly when shone onto chrome object

Note - if you have a problem launching the current public release of Half-Life: Source then please opt into this beta

We have released a Beta update for Half-Life: Source.
Changes in this update are:

• Added ability to run with the Half-Life 1 HD content pack. Go to the video options dialog and select "Load HD content if available" to enable this option. This HD content pack was adapted from the original Half-Life version by A. [Stone] Denisov.
  
• Fixed skyboxes not showing correctly on Xen
  
• Fixed muzzle flash from gunfire not showing
  
• Fixed Nihilanth being very hard to kill
  
• Fixed Alien Grunt armor not being taken into account during fights
  
• Fixed Apache health amount to match Half-Life 1
  
• Fixed map logic bug in c1a3 controlling the 2 sentry guns
  
• Fixed flashlight rendering incorrectly when shone onto chrome object

Note - if you have a problem launching the current public release of Half-Life: Source then please opt into this beta

We have released a Beta update for Half-Life: Source.
Changes in this update are:

• Fixed houndeye not attacking players properly when in groups

We have released a Beta update for Half-Life: Source.
Changes in this update are:

• Fixed houndeye not attacking players properly when in groups

We have released a Beta update for Half-Life: Source.
Changes in this update are:

• Enabled autosave by default
  
• Fixed Houndeye's not joining together in a squad (preventing them from dealing increased damage)
  
• Fixed scientists Q&A chatter having the wrong response target

We have released a Beta update for Half-Life: Source.
Changes in this update are:

• Enabled autosave by default
  
• Fixed Houndeye's not joining together in a squad (preventing them from dealing increased damage)
  
• Fixed scientists Q&A chatter having the wrong response target

We have released a Beta update for Half-Life: Source.
Changes in this update are:

• Added support for custom FOV settings as we have in our Source engine games
  
• Fixed Audio options dialog
  
• Fixed Chapter 3 not starting at the correct map
  
• Fixed blood color on aliens to more closely match original Half-Life 1
  
• Fixed sentry guns not firing correctly
  
• Fixed headcrab not playing all their sounds
  
• Fixed scientists not engaging in their question and answer dialog
  
• Fixed crowbar sounds to more closely match original Half-Life 1

We have released a Beta update for Half-Life: Source.
Changes in this update are:

• Added support for custom FOV settings as we have in our Source engine games
  
• Fixed Audio options dialog
  
• Fixed Chapter 3 not starting at the correct map
  
• Fixed blood color on aliens to more closely match original Half-Life 1
  
• Fixed sentry guns not firing correctly
  
• Fixed headcrab not playing all their sounds
  
• Fixed scientists not engaging in their question and answer dialog
  
• Fixed crowbar sounds to more closely match original Half-Life 1

In support of the Steam for Linux release we have made Half-Life: Source available on Linux and Mac OS X.

This beta involves significant changes for all platforms and your testing is appreciated, please report any bugs to our GitHub page.

Linux and OS X users can simply install the Half-Life: Source application to access the beta. You MUST also opt into the Beta version of Half-Life 2 when testing on Linux and OSX, you can do this by right clicking the game in your Library, choose properties and then go to the Beta tab. Select the SteamPipe beta to start testing.

For Windows users right click the game in your Library, choose properties and then go to the Beta tab. Select the SteamPipe beta to start testing. Under windows to opt out of testing simply deselect the beta option on this same page.