What is new in z/OS (V2R4 - V2R5)

The following major enhancements were introduced in z/OS® V2R5 and V2R4. Some enhancements require customization actions before you can use them. This information helps ensure that you can locate the documents that describe the customization actions.
Note: The document lists for each function are not exhaustive and generally omit links to purely reference books for items that include system messages, system codes, and data areas.