The current 1.7 release notes page <http://subversion.apache.org/docs/release-notes/1.7.html> says:
"""Compatibility Concerns Older clients and servers interoperate transparently with 1.7 servers and clients. [...] """ This could mislead users who are wondering whether TSVN 1.6 and 'svn' 1.7 clients will interoperate transparently on the same WC. Would this be better? """Older clients interoperate transparently with 1.7 servers, and older servers interoperate transparently with 1.7 clients. [...] """ - Julian