You don't need to wait for the next release. If you just build the current one from the source tarball from the gstreamer website, ladspa gets built. No idea why it's not built as part of the existing shipping packages...
-- ladspa plugin missing https://launchpad.net/bugs/39955 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs