A much updated pre-release of Solaris 11 is now available on OTN, it is supposed to contain all the final functionality of Solaris 11. Text installer for SPARC/X64 is available. live-CD for X64 as well as repository images.
This release should work all the same (64-bit) X86 systems as Solaris 11 Express, but on for SPARC you must have a T or M-series class machine, support for older UltraSPARC based system has been removed.
Thanks to Craig S. Bell for pointing this out in previous comments, I did not expect any new release before Oracle World.
Update: The build of this release is snv_171, the Solaris 11 Express release was based on snv_151a.
Solaris 11 Early Adopter Program
Talks I have given
5 months ago