Back in 2005 (wow already that long ago?), we started talking to some key PHP application projects to get them to get more involved in the QA processes around release candidates (RC's for short). This was a list of projects maintained on the old PHP todo wiki. Recently Wez finished setting up a proper mailinglist for the primary qa testers as a replacement to the wiki pages. This list is setup to allow posting only by release managers (RM's for short). All replies are send to the php-qa mailinglist.
This makes life easier for the RM's when they want to send out notification of a new RC. It also means that any project can now easily subscribe itself to be included. The primary tester list is not about some elite getting special attention. Its just a way to get notifications for RC's out there without them having to monitor the internals mailinglist. The more people try out the RC's the better. So please consider adding yourself to the mailinglist and more importantly please run your projects tests suites against new RC's and report any regressions or concerns back to the php-qa mailinglist (or in a bug report etc.).