According to the End-of-Feature Notices, Solaris 11 is dropping support for older “legacy” SPARC hardware:

Support for legacy systems that have included the UltraSPARC I, II, IIe, III, IIIi, III+, IV and IV+ processor architectures (as reported by the Solaris ‘psrinfo -pv’ command) has been removed. All Oracle SPARC Enterprise M-Series Servers and Oracle SPARC T-Series Servers will continue to be supported.

Note: Oracle Solaris 10 will continue to be a supported operating system for these affected platforms as per the current Oracle lifetime support policy.

According to this article, Oracle is proposing to give the OpenOffice.Org code to the Apache Software Foundation incubator for further development.