Samba 4 is now slated for release on November 27

http://en.wikipedia.org/wiki/Samba_%28software%29

Samba 4.0 – complete with a Microsoft-compatible Active Directory controller – is now slated for release on November 27 -- for real. 

The fourth release candidate of the open source  platform was released today and the fifth release candidate is slated for release on November 13. If all goes well, the final version is expected to be released by the end of November, one Samba project manager said today.

 "Samba 4.0.0rc4 has just been released,” wrote Karolin Seeger, a Samba release manager in an email distributed today. “As there are some outstanding bugs, I would like to propose to ship Samba 4.0.0rc5 on Tuesday, November 13 and to go ahead with the final release on Tuesday, November 27."