This feature is new in the Software Express pilot program. This feature is included in the Solaris 10 3/05 release.
You can now use the JumpStart installation method to create an empty boot environment when you install the Solaris Operating System. The empty boot environment can then be populated with a Solaris Flash archive for later use.
For further information, see Solaris 10 Installation Guide: Custom JumpStart and Advanced Installations.