Dear Colleagues: Version 2.0.5a6 of the OOF program for microstructure modeling is now available at http://www.ctcms.nist.gov/oof/oof2/ This version fixes a few memory leaks and other bugs. It also works around an installation problem on Macintoshes caused by recent modifications to the fink package management system. As before, this version is only called an "alpha" release because it includes some incomplete or untested new features, particularly interface properties. Upgrading to 2.0.5a6 is especially recommended for OOF2 users having trouble with installation on Macintoshes, or with memory use issues. Sincerely, The OOF Team