IMPORTANT TEMPORARY NOTICE:

Joomla 1.0.13 Stable has been released in its current SVN state to our surprise.

Joomla 1.0.13 breaks backwards compatibility with itself (you can't downgrade to anything before joomla 1.0.13), and with some extensions like Community Builder and bridges, and is not compatible with CB 1.0.2 or earlier.

Additionally, some vulnerabilities introduced by the RC3 that we reported privately did not get fixed

Our strong advice: do NOT upgrade to Joomla 1.0.13 for now.

CB Team feels sorry to have to make this announcement. I'm personaly part of Joomla Q&T team and CB test-team tests Joomla pre-releases too. Unfortunately fixes for bugs and vulnerabilities identified in 1.0.13 RC3 were not made available to Joomla Q&T team and CB test-team for further testing prior to public release. This issue has just been addressed by CB team to Joomla core team, and we are waiting for a reply.