The release 0.9 of the opensource backup tool for InnoDB and XtraDB is available for download.
The binary packages for RHEL4,5, Debian, FreeBSD, MacOS as well as source code of the XtraBackup is available on https://www.percona.com/mysql/xtrabackup/0.9/.
The project lives on Launchpad : https://launchpad.net/percona-xtrabackup and you can report bug to Launchpad bug system:
https://launchpad.net/percona-xtrabackup/+filebug. The documentation is available on our Wiki.
For support, commercial and sponsorship inquiries contact Percona.