Top Secret for z/OS

August 2026

To:         Top Secret for z/OS Customers

From:    The Top Secret Product Team

Subject: End of Service Date Change Announcement for Top Secret for z/OS Version 16.0

Broadcom is continually working to improve our software and services to best meet the needs of our customers. Please consider this email your written notification that we are adjusting the End of Service date previously announced for Top Secret for z/OS Version 16.0 to March 16, 2027. After March 16, 2027, Broadcom will continue to make self-service support available until the end of your current maintenance term for Top Secret for z/OS Version 16.0.

We encourage you to plan for the migration to Top Secret for z/OS Version 17.0 as soon as possible, so you can take full advantage of the features and enhancements this release has to offer. Prior to migrating to Version 17.0, we recommend you apply the latest maintenance that is available during the time of migrating to Version 17.0. This is available through the Support Portal page. For information on Top Secret for z/OS, please visit the Top Secret for z/OS Support Portal page. 

New features for Top Secret for z/OS Version 17.0 can be found in the Tech Docs. 

As Broadcom would like to make your upgrade to Top Secret for z/OS Version 17.0 as straightforward as possible, we are offering the following:

• Please review this Security Advisory for an important security update and required steps that you must complete prior to upgrading to Top Secret for z/OS Version 17.0.
• The latest supported Version of Top Secret for z/OS can be downloaded, at no charge, online within the Support Portal, where you can also utilize the case management system, as long as you have an active maintenance contract for Top Secret for z/OS.
• Documentation to help you prepare for your upgrade to Version 17.0 can be viewed here. If you have any questions or require assistance, contact Support.
• Accelerated time-to-value when you engage Broadcom Mainframe Services to assist you with any or all parts of your upgrade. Additional information can be found at the Services site. Please contact your account representative to receive a quote for such services.

Should you need any assistance in understanding the new features or implementing the latest release, please contact your local account representative for more information or to get help. To connect, learn, and share best practices, join and participate in our Mainframe Cybersecurity & Compliance Community.

For a list of Mainframe Education courses recommended by role, please visit the Learning Paths and select the desired product. We update courses based on functional impact as well as high-demand; therefore, courses created from previous releases may apply to the current release.

Your success is very important to us, and we look forward to continuing our successful partnership with you.