A new build (128a) in the development branch of OpenSolaris was released today. This build has support for the long awaited ZFS deduplication. Now you can download it and try it for yourself. This build includes other interesting features also such as zfs send dedup and zpool recovery.
While am at it, there have been a few other software releases this week:
Netbeans 6.8 Release Candidate 1 have been released and is available here.
VirtualBox 3.1 made it into a final release and is available for download.
Talks I have given
5 months ago