I’m a passionate user of the RSS/Atom features of the web. For a long time I thought that the best client for these protocols is the google reader, but now I’ve found a firefox extension that does really good job with feeds handling. I’m using Brief add-on.
And since the bmpanel2 development page is located on the code.google.com hosting, there are various feeds available to you as a user. I think the best way to make a bug report or feature request is to use that page. Also, you can use that feed to track issue changes, or for example this one to follow all kind of project updates. It includes: new files to download (themes + releases), issue changes, and project commits (but I don’t use their source repository).
I hope you’ll find this information useful.