The latest community release is Lustre 2.10.0 - see Lustre 2.10.0 Changelog for more details.
Download the latest community release here.
The archive of older releases are also available here.
For the future plans please see the Lustre Roadmap.
For details of development in progress within the Lustre community see the Community Development wiki
Users are encouraged to always run the latest version of e2fsprogs on their servers.
The Lustre-enhanced version of GNU tar is capable of backing up and restoring the Lustre layout for files. This requires that the user specify the --xattr option when backing up and restoring the files. The RHEL6.3 and derivative releases of GNU tar include Lustre specific enhancements, so the separate Lustre-enhanced GNU tar is not needed for those releases.