After the next release (4.0), LDAP, SAML, and Custom Oauth will be available only in Enterprise Edition and Gold plan

[girish]

I have pushed an update to 4.0 now. We will roll it out slowly, just to make sure there are no major breakages. The list of LDAP changes are at https://docs.rocket.chat/quick-start/identity-management-ee-vs-ce#ldap3 . Overall, it seems that LDAP filter, basic sync etc are all there in CE.