List of Releases
The SSR software follows a semantic versioning scheme. Semantic versioning is a simple scheme built around the name-X.Y.Z-build-milestone concept. X is incremented for every major release. A major release can be the introduction of major features or when backwards compatibility may be broken. Y is a minor release with solely non-breaking feature additions. Z is designated for bug fixes in previous releases. -build is used to denote the incremental process of development until the culmination in the final release. -milestone can be one of r1, r2, sts or lts.
Starting with version 5.4.0 the -build will reflect the number of iterations the release candidate went through prior to release. The build number will never increment once the software has been released. The build number will be included in the release notes for the respective version.
SSR Software Release Model
Beginning with version 6.1.0, SSR introduces a release model including suffixes which indicate milestones of the release lifecycle.
Release Lifecycle
A new software release stream is released every 6 months. Each stream (e.g., major.minor) progresses through three build milestones:
- R1 (Release Candidate 1) – Initial feature release
- R2 (Release Candidate 2) – Additional features, released 3 months after R1
- STS or LTS Support Designation – Assigned 3 months after R2
Patch Releases
Patch releases may occur between R1 and R2 to address issues. Once R2 is released, customers should upgrade to R2 to stay on the same release stream, and receive fixes for issues found in R1. Additional patch releases will occur beyond R2 up to end of engineering support.
Support Designation
3 months after R2, the release is designated as either STS (Standard Term Support), or LTS (Long Term Support). These designations alternate between release streams. STS or LTS designations indicate the expected support lifecycles. Support timelines begin when the release is officially labeled with its suffix:
- STS: Supported for 9 months
- LTS: Supported for 24 months
Important: The support timelines start from the STS/LTS designation date, not the initial release date.
Issues resolved in a release are merged into subsequent releases chronologically AND lexicographically.
For example, issues resolved in 4.3.12, which was released on 3/12/2021, are resolved in 4.5.6, which was released on 3/26/2021 and also resolved in 5.1.0, which was released on 3/15/2021, and so on.
However, issues resolved in 4.3.12, which was released on 3/12/2021 are not addressed in 4.5.5 because 4.5.5 was released on 2/10/2021. Even though 4.5.5 is lexicographically higher than 4.3.12, it is chronologically older than 4.3.12.
| Term | Definition |
|---|---|
| EoE | End of Engineering support. Patches will no longer be produced after this date. |
| EoS | End of Support. 6 months following EoE date. Release is EoL and TAC is unable to support unless software is upgraded. |
| Major | Introduction of significant features or backwards incompatibility. |
| Minor | New feature content. |
| Patch | Bug fixes only. |
| -build | Final build version released. |
| R1 | Release Candidate 1. Introduction of new features. First version of every release stream (major.minor). |
| R2 | Release Candidate 2. Introduction of new features. Second version of every release stream (major.minor). |
| sts | Standard Term Support. 9 months until EoE from the initial sts date. |
| lts | Long Term Support. 24 months until EoE from the initial lts date. |
General Availability
| Version | Initial GA Version | First Release Shipping Date | Latest GA Version | Support Lifetime | End of Engineering support | End of Support |
|---|---|---|---|---|---|---|
| Release 7.1 | 7.1.0 | December 4, 2025 | 7.1.4 | STS | March 10, 2027 | September 10, 2027 |
| Release 7.0 | 7.0.1 | October 14, 2025 | 7.0.1 | LTS | August 24, 2028 | February 24, 2029 |
| Release 6.3 | 6.3.0 | September 30, 2024 | 6.3.7-6-sts | STS | May 6, 2026 | November 6, 2026 |
| Release 6.2 | 6.2.0 | November 16, 2023 | 6.2.10-lts | LTS | September 6, 2026 | March 6, 2027 |
| Release 6.1 | 6.1.0 | April 14, 2023 | 6.1.13-lts | LTS | September 22, 2025 | March 22, 2026 |
Out of Support
| Version | Release | End of Engineering support | End of Support |
|---|---|---|---|
| Release 6.0 | July 18, 2022 | November 30, 2023 | November 30, 2023 |
| Release 5.6 | March 16, 2023 | June 16, 2024 | December 16, 2024 |
| Release 5.5 | August 11, 2022 | November 19, 2023 | May 19, 2024 |
| Release 5.4 | February 18, 2022 | December 18, 2022 | June 18, 2023 |
| Release 5.3 | August 6, 2021 | February 6, 2022 | August 6, 2022 |
| Release 5.2 | May 10, 2021 | November 10, 2021 | May 10, 2022 |
| Release 5.1 | May 17, 2021 | August 24, 2022 | February 24, 2023 |
| Release 5.0 | December 18, 2020 | June 18, 2021 | December 18, 2021 |
| Release 4.5 | July 23, 2020 | April 15, 2021 | October 15, 2021 |
| Release 4.4 | May 19, 2020 | April 19, 2021 | September 19, 2021 |
| Release 4.3 | February 8, 2020 | December 24, 2020 | September 26, 2021 |
| Release 4.2 | November 21, 2019 | October 8, 2020 | April 8, 2021 |
| Release 4.1 | February 7, 2019 | July 8, 2020 | January 8, 2021 |
| Release 4.0 | December 18, 2018 | September 18, 2019 | March 18, 2020 |
| Release 3.2 | March 15, 2018 | December 15, 2018 | June 15, 2019 |
Please refer to the Software Support Policy page to understand the lifecycle of SSR releases.