We have released a Beta update for Portal.
Changes in this update are:

• Fixed scenes in games very rarely not playing, preventing forward progress in a level
  
• Fixed advanced chambers not unlocking after finishing the game
  
• Fixed rendering issue when taking damage
  
• Updated in game localization
  
• Fixed background map when a non-standard FOV is selected

Note - This update breaks any save games that were made DURING the beta, if you get an error on load of a save then you will need to manually restart that map, the command to type is shown in the console.

We have released a Beta update for Portal.
Changes in this update are:

• Fixed save game corruption when running under Linux
  

We have released a Beta update for Portal.
Changes in this update are:

• Fixed Bonus maps entries not appearing under Linux
  
• Fixed Closed Captions not working correclty under Linux
  
• Fixed crash on some level transitions if you were carrying a radio
  

We have released a Beta update for Portal.
Changes in this update are:

• Fixed game issue when loading from older save files
  
• Fixed 360 controller not mapping correctly under Linux or OSX
  
• Fixed Bonus maps not being available
  
• Fixed closed captions not showing
  

Portal is now available as a Beta. This beta adds Linux support and converts the game to the new Steam Content delivery system.

This beta involves significant changes for all platforms and your testing is appreciated, please report any bugs to our GitHub page, https://github.com/ValveSoftware/source-1-games/issues.

Linux users can simply install Portal to access the beta. For Windows and OS X 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 and OS X to opt out of testing simply deselect the beta option on this same page.