Everyone can check out forthcoming features early.
If you're a regular user of Steam to supply yourself with all the best PC games you may also be interested in checking out new features coming to the client ahead of time. Steam has a great beta program that sees regular updates, with shiny new stuff hitting this channel before making it into the stable client.
The even better news is that it's not a secret beta program limited to select, lucky people. Anyone who uses Steam can check out the beta client at any time, and revert back to the stable client if they're not happy. Here's how to do it.
Full story from the WindowsCentral blog...