Because the latest 0.8 release is now well over 5 years stable and the 0.9 series is stable for about 3 years, from this point forward the 0.7 series of nss-pam-ldapd will no longer be supported.
The 0.8 series will remain supported for some time with security fixes and major bug fixes as needed. The 0.9 series will also receive other bug fixes and enhancements.
Users are encouraged to upgrade to the latest 0.9 release because stability is at least comparable to 0.8 and a lot more useful features were added such as tunable logging, nested groups, password policy support, invalidating caches and more powerful attribute mapping expressions.
See the security page for the current support status.
Ideas, comments and patches for functionality are more than welcome. Please drop a note on the nss-pam-ldapd-users mailing list with any ideas or patches you may have.