CompleteFTP Enterprise Edition has been released, and is available now.
The Enterprise Edition is aimed at users wanting enterprise features such as customization, multiple sites and built in failover.
This version of Enterprise Edition introduces .NET extensions for customization of authentication, filesystems, events and site commands. Now customers can plug in their own authentication mechanisms, their own file systems and events, as well as adding custom site commands. For more details on .NET extensions see the User Guide for extensions.
Multiple sites is the next feature slated for release in June, and will be followed by failover capabilities in Q3.
A trial download and more details can be obtained at this link.