What's new and changed in watsonx Code Assistant for Z Code Generation

watsonx Code Assistant for Z Code Generation updates can include new features and fixes. Releases are listed in reverse chronological order so that the latest release is at the beginning of the topic.

You can see a list of the new features for the platform and all of the services at What's new in IBM Software Hub.

Installing or upgrading watsonx Code Assistant for Z Code Generation

Ready to install or upgrade watsonx Code Assistant for Z Code Generation?

  • To install watsonx Code Assistant for Z Code Generation along with the other IBM® Software Hub services, see Installing IBM Software Hub.
  • To upgrade watsonx Code Assistant for Z Code Generation along with the other IBM Software Hub services, see Upgrading IBM Software Hub.
  • To install or upgrade watsonx Code Assistant for Z Code Generation independently, see watsonx Code Assistant for Z Code Generation.
    Remember: All of the IBM Software Hub components associated with an instance of IBM Software Hub must be installed at the same version.

IBM Software Hub Version 5.3.1

A new version of watsonx Code Assistant for Z Code Generation was released in February 2026 with IBM Software Hub 5.3.1.

Operand version: 2.8.10

This release includes the following changes:

Updates
The current release includes improvements and bug fixes.
Customer-reported issues fixed in this release
For a list of customer-reported issues that were fixed in this release, see the Fix List for IBM Cloud Pak for Data on the IBM Support website.

IBM Software Hub Version 5.3.0

A new version of watsonx Code Assistant for Z Code Generation was released in December 2025 with IBM Software Hub 5.3.0.

Operand version: 2.8.0

This release includes the following changes:

Updates
The following updates were introduced in this release:
Support for code generation MCP server in agentic chat experience

With the code generation MCP server is now integrated within the agentic chat experience, you can now use extended RAG capabilities in the agentic workflow.

Issues fixed in this release
The following issues were fixed in this release: CVE-2025-64329
Customer-reported issues fixed in this release
For a list of customer-reported issues that were fixed in this release, see the Fix List for IBM Cloud Pak for Data on the IBM Support website.