The latest Long Term Support (LTS) release is Lustre 2.12.1 - see Lustre 2.12.1 Changelog for more details.
Download the latest LTS maintenance release here
Download the final 2.10 LTS maintenance 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.