This much is known: Lustre 2.0.0 is now GA and available for download but in a community-only release. Upgrades to 2.0.0 are not supported for production 1.8.x sites. Lustre 2.0.0 provides support for OEL 5, RHEL 5, SLES 10 and 11 (client only), and Fedora 11 (client only). This release offers a number of significant features and enhancements, including Changelogs, Commit on Share, Lustre_rsync, and Size-on-MDS (preview). Lustre 2.0.0 supporting documentation includes the Operations Manual, Release Notes, and Change Log 2.0. As to Lustre's ultimate future ... more will be revealed.
Lustre Wiki Page
Lustre File System Product Page
Lustre Strategy Update
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