The Solaris Express 1/04 release introduced the following features:
Expanded Disk Set Support in the Solaris Volume Manager
Dynamic Resource Pools
User Commands for Solaris Cryptographic Framework
IKE Configuration Parameters
IPv6 Advanced Sockets API
Contents of /usr/lib/mail Have Moved to /etc/mail/cf
The following features were enhanced in the Solaris Express 1/04 release:
Core File Content Enhancements
Linkers and Libraries Updates