SXCE is "nevada", which is documented in the Solaris Express collections on docs.sun.com for now.
You might also find new documentation on community and project pages. The announcements of the biweekly releases include release notes. The OpenSolaris.org downloads page says: Solaris Express Community Edition is Sun's binary release for OpenSolaris developers (code named "Nevada"). It is built from the latest OpenSolaris source and additional technology that has not been published in the OpenSolaris source base. This release is unsupported. Unsupported can mean that the docs.sun.com documentation is not up-to-date with every biweekly release. Some new features are labeled with the build in which they first appeared. -- This message posted from opensolaris.org
