Petals ESB 3.0.3 is released, as a maintenance version. It includes bug fixes, and performance optimization, expecially in distributed context.
See release not for more information : http://petals.ow2.org/releasenotes/release-note-petals-esb-camelia-3.0.3.txt

Updated components :
BC-Filetransfer
BC-FTP
BC-JMS
BC-Mail
BC-SFTP
BC-SOAP
BC-SQL
SE-BPEL
SE-EIP
SE-JSR181
SE-KPI
SE-Notification
SE-Pojo
SE-Validation
SE-XSLT

A component was also pushed from "sandbox" to "stable and supported",
SE-RMI

Note about documentation : Documentation is going to top-priority for Petals. We are currently restructuring the documentation, using content management. An updated documentation will be available in a few weeks, online and with a full pdf. For now, using the old documentation and the forum should work as well.