Valve are going to run a short beta on Steam to test the new version of Friends. To run the beta you'll need to run Steam from a command line, adding the following parameters:
steam.exe -clientbeta steam3friends -beta steam3friends
If you find any bugs, please add comments to this page with a description of the problem.
A helpful bug format is:
short title
Expected: expected behavior
Observed: observed behavior
Steps to reproduce: steps to reproduce the problem
a description of your network topology.