Jarkko Hietaniemi has released perl 5.7.2 (a development release, not for production use). He notes:
" Perl 5.7.2 can be considered to be the virtual Release Candidate Zero for the Perl 5.8.0, it is just not called a Release Candidate. It is in pretty good shape, it is just that it is not *quite* yet ready to be a major release. No large changes are expected between now and 5.8.0."
Pick it up from CPAN and check the announcement.