"In a recent email to this blogger, Jeremy Allison, a lead
developer on the project who works in Google's open source programs
office, said he is unsure of the exact date of 4.0's release. But
3.6 is right around the corner, he notes.
"'Well, [Samba] 3.6.0 comes first. We're about to go rc2 in a
week or so. Then it's the race to fix all the showstoppers for a
4.0.0 release. Sometime the end of the year?'
"Samba 3.6 actually reached second release candidate stage on
June 7. That features SMB2 protocol support, enhanced SMB traffic
analysis, enhanced security, changes to the Internal Winbind passdb
and ID mapping functionality and a new Spoolss code."