A brand new IDS fixpack has been released by IBM. The fixpack is named 11.50.xC6 and contains several new functionalities. The IDS 11.5 Information Center has currently (2009-01-04) not been updated. So it doesn't contain information about the new functionality or updated Releasenotes. Below you'll find an excerpt from the UNIX Releasenotes delivered with the download of the IDS 11.50.xC6 Developer Edition:

Administration

• External Backups on RS Secondary Servers
• Dynamically Start, Stop, or Restart Listen Threads
• SQL Administration API Portal: Arguments by Functional Categories
• Connection Manager Proxy Support
• View Event Alarms in the Scheduler
• Improved Transaction Information
• Enhancements to the OpenAdmin Tool for IDS
• Enhancements to the Schema Manager plug-in for the OpenAdmin Tool for IDS

Application Development

• Enhancements to Merging Information into a Target Table with the MERGE Statement
• An ALTER FRAGMENT Operation Can Now Force Out Transactions to Get Exclusive Access to Tables
• RETAINUPDATELOCKS Environment Option
• New Column Size Field Format for CDC Records

Enterprise Replication

• Enhancements to the Enterprise Replication plug-in for the OpenAdmin Tool for IDS
• Enable or Disable Enterprise Replication Event Alarms

High-availability

• XA Transaction Support for Updatable Secondary Servers in a High-availability Cluster

Installation

• Deploying Instances with the Deployment Utility
• Installing IDS by Using an RPM package (Linux)

Migration

• Migrating or Upgrading High-availability Clusters
• Upgrading to a New Server or Fix pack
• Quickly Reverting to Your Source Server After a Failed Upgrade

Performance

• Light Scans on Tables
• Process Multiple Basic Text Search Queries Simultaneously

Warehousing

• Load and Unload Data with External Tables

Here is a complete copy of the 11.50.xC6 releasenotes.