From April 17th to 18th 2008 developers and users will meet again in Goettingen, Germany at the seventh international Samba conference, the "samba eXPerience 2008".

From the press release:

The sambaXP is the leading event with focus on the most important free alternative to proprietary SMB/CIFS servers.

The call for papers and early bird registration are open until January 28th 2008. Please find all necessary information at the conference homepage.