We looked into this a few weeks ago and the specifics hadn’t been posted… they are now.
Directly from Sun’s site;
Open Source Communities Announce Participation Details For Sun Sponsored $1Million Innovation Awards Program
Sun Microsystems, Inc. (Nasdaq: JAVA), and the GlassFish, NetBeans, OpenJDK, OpenOffice.org, OpenSolaris and OpenSPARC communities announced details on how developers and community members can participate in the individual Open Source Community Innovation Awards programs. Each community, as outlined below, will have its own program rules and judging criteria.
In any Free and Open Source Software (FOSS) community, collaboration and creativity are central to its success in engaging developers and fostering …read more

Sun Announces Open Source Community Innovation Awards Program
Multi-year Program Expected to Payout Millions to Foster Global Community-based Innovation
SANTA CLARA, CA December 5, 2007: “Sun Microsystems Inc. (Nasdaq: JAVA), today announced a multi-year program called the Open Source Community Innovation Awards Program, which will foster innovation and recognize some of the most interesting initiatives within Sun-sponsored open source communities worldwide. To participate in the program’s first year, Sun has selected six communities: GlassFish, NetBeans, OpenJDK, OpenOffice.org, OpenSolaris and OpenSPARC. Prizes are expected to total at least $1 million (USD) a year.”
Sun was supposed to have more information posted by January 14th …read more