Glenn Weinberg, vice president of Sun's operating platforms group, is quoted in a ZDNet article, Open-source details hold up Solaris release as indicating details on Sun's open-source version of Solaris may not be finalized by the end of the year. "It'll be really close," Weinberg told reporters. According to Sun president Jonathan Schwartz, Sun has not ruled out releasing Solaris under a GPL license.
Sun is discussing their plans with open-source representatives at the Open Source Initiative, though Eric Raymond, president of the Open Source Initiative, has stated those communications have been unofficial.