Apple rolled out Server Admin Tools 10.5.6v1.1 Tuesday evening. The update notes are slim on what the update addresses, although the tools are necessary for remotely managing Mac OS X Server 10.5.6 and later.
The Server Admin Tools package weighs in at 92.7MB and includes Server Assistant, Server Admin, Server Monitor, Workgroup Manager, System Image Utility, Xgrid Admin, QuickTime Broadcaster, and server documentation.
Server Admin Tools 10.5.6v1.1 is free and available for download at the Apple Support Web site.