We have successfully launched out Workshop today. It is fully functional and is ready for you to grab tutorials, Open source files and other resources. And if you are brave perhaps post your own! More information below....
This tool linked below will allow you to access files in the workshop that you have subscribed to. Once a few users have checked it out and verified it works as expected it will be embeded under the tool tab in CF2.5. Note we are working on getting subscriptions to download automatically, currently you have to grab them manually though the tools Download section.
http://download.clickteam.com/misc/en/steam/SteamWorkshopTool.exe