I have written my proposal and rationale at https://cwiki.apache.org/confluence/display/SVN/LTS+and+regular+releases
Summary of my latest thoughts: * Apps using experimental APIs should be packaged declaring a single-version dependency. Then there is no need to provide error-return stub versions of dead APIs. * We should treat what we are calling "experimental" APIs and what we have previously called "private" APIs exactly the same. * In order to give packagers flexibility about packaging experimental APIs, we should put them in separate header files, and perhaps there is more that we should do too. Please read and comment (here and/or there). -- - Julian
