WP-Members 2.5.1 has been released and is available for download here. So far, the release has gone smoothly. But as an incremental update, there are not major changes.
There is also a new Users Guide. It has been a long time coming, but I finally just sat down and wrote until it hurt. It will continue to be revised and updated, but impatient users can continue to check the link below for ongoing updates. This will eventually be a comprehensive guide to the plugin covering all of its features in detail.