Version 1.40 Steamworks SDK released
The Steamworks SDK has been updated with changes to ISteamInventory, ISteamUtils, ISteamUser, ISteamUGC and ISteamVideo. The SteamPipe GUI wrapper tool is now included the SDK.
Version 1.39 Steamworks SDK released
The Steamworks SDK has been updated to future-proof Steam controller API and expand on Steam Inventory Service functionality.
Version 1.38a Steamworks SDK released
The Steamworks SDK has been updated. Version 1.38a is identical to 1.38, except libsteam_api.dylib has been included for Mac OSX.
Version 1.37 Steamworks SDK released
The Steamworks SDK has been updated to better support forward compatiblity. The ISteamUGC interface has also been expanded to support developer defined preview files.
Version 1.36 Steamworks SDK released
The Steamworks SDK has been updated with a new function for ISteamController and updated redistributables
Version 1.35a Steamworks SDK released
The Steamworks SDK has been updated with a new function to assist with memory-managment issues in games that call Steamworks from multiple threads. Version 1.35a is identical to version 1.35 except for this new function.
Version 1.35 Steamworks SDK released
The Steamworks SDK has been updated to add support for production Steam Controllers to ISteamController, as well as new functionality in ISteamRemoteStorage.
Version 1.34 Steamworks SDK released
The Steamworks SDK has been updated to include new Workshop functionality in ISteamUGC.
Version 1.33b Steamworks SDK released
The Steamworks SDK has been updated. Version 1.33b is identical to 1.33a, except ISteamUGC is exposed to game servers now.
Version 1.33a Steamworks SDK released
The Steamworks SDK has been updated. Version 1.33a is identical to 1.33, except steam_api.dll is built without debugging symbols and steam_vr_interop.cs has been removed.
Version 1.33 Steamworks SDK released
The Steamworks SDK has been updated. Version 1.33 of the SDK expands the ISteamUGC interface to support stand-alone game servers, developer set metadata, etc., and removes steamvr.h (you can use the OpenVR SDK to access those interfaces: https://github.com/ValveSoftware/openvr).
Version 1.32 Steamworks SDK released
The Steamworks SDK has been updated. Version 1.32 of the SDK adds C# bindings, a flat C-style API, improvements to the HTTP interface, and an initial release of the Steam Inventory Service.