As far as I understand from roadmap discussions, LDAP will be included with 2.1 version of XOOPS. I've tried to contact to core team members several times with PM, but I got no responce so I'm tring to communicate with forum :)
I think it is a good idea to discuss how LDAP integration or LDAP support will be in core before coding. So there should be a user group, beta test group and development group. I can join all of three teams if desired. But I want to be sure LDAP will be in core with 2.1 version. Because when we talked about version 2.0, it was said LDAP will be in core with version 2.0, but there were no progress. And also I wrote a hack for XOOPS version 1.3.4. Look at this thread. But this hack remained only for version 1.3.4.
I'm sure XOOPS will be more powerful and more widely used with LDAP integration.
Best regards
Hirac