The OpenLDAP project has announced a 2.5.0-alpha release. From looking through the list of issues addressed in this release, it looks like some of the enhancements include:

• Add support for LDIF parsing in a libldif library
• Add client-side support for retrieving information about the server’s TLS certificate
• Add an option to specify a maximum entry size
• Add an option to specify a maximum entry size
• Add support for the Microsoft LDAP_SERVER_LAZY_COMMIT control
• Include the operation duration in log records
• Allow LDAP client tools to run without a configuration file
• Add client-side support for TLS certificate pinning
• Add support for acting as an Active Directory replication consumer via DirSync
• Add support for persistent searches as described in draft-ietf-ldapext-psearch-03
• Add client-side support for the TLS SNI extension
• Add support for channel binding when using GSSAPI
• Add syncrepl status to the monitor
• Add support for nested group membership
• Add a tool for monitoring server status
• Add support for the authorization identity control as described in RFC 3829