If you'd like to help test the latest "coredev" version of Plone (ie. the one that has the current set of commits, more current than the release candidates and betas), please go to
http://dev.brianledwell.com:8081/Plone
where you can log in using admin/admin
If you want, you can create a new Plone site for your own testing by going to http://dev.brianledwell.com:8081/manage_main
I will try to keep the site updated frequently with the latest commits (and eventually I'll figure out how to get that automated). For the time being, look at the front page of http://dev.brianledwell.com:8081/Plone/ to see when the last update took place.
You can file bugs here: