Skip to main content
Version: 1.6.x

TSB Support Policy

TSB Releases explained

TSB follows a semantic versioning model based on This means we use a MAJOR.MINOR.PATCH version numbering style (e.g. v1.4.0).

This model describes that:

  1. MAJOR version is incremented when incompatible API changes are made.
  2. MINOR version is incremented when new features are added.
  3. PATCH version is incremented when bug and security fixes are handled.

TSB Release Cadence and Support

Tetrate releases PATCH updates (1.x.y) to supported TSB versions on a regular basis, and at least quarterly.

Each release of a new MINOR falls under the Long Term Support (LTS) policy, in which Tetrate provides support starting from the official General Availability (GA) release date of the MINOR release, up to the End of General Support (EoGS) set to 12 months after GA. Any release after EOGS will not be supported unless you have purchased extended support. Please contact your Tetrate sales representative if you are interested in purchasing extended support.

During the release's support window, bug and security fixes will be provided for each eligible MINOR version, through the use of PATCH releases (e.g. v1.x.1). A new PATCH release does not reset the support lifetime duration, as it is tied to the initial MINOR release. Patch releases include fixes for TSB specific components, as well as patch fixes for its open source components like Envoy, Istio, SkyWalking, and Zipkin.

TSB Release Candidate versions

Next to the LTS versions, Tetrate can make interim "release candidate" versions available. These interim versions provide early access to new features to try out and test.

Release Candidates

Release candidate versions are not meant for production usage and even in non production we strongly encourage you to understand that there might be bugs that are either described in the preliminary release notes, or are not yet known. Also note that, new features might not be fully completed and documented yet.

If interested in testing a release candidate, do not hesitate to contact your Tetrate representative for the context around the specific release candidate. Customers testing release candidate versions are strongly encouraged to upgrade to the next LTS version as soon as available.

Supported Versions

In LTS support lifetime, Tetrate will supply patches, security fixes for its components, and the underlying OSS dependencies as described in our component matrix.

Features are not back ported, please see the release notes and the feature status documents for released features.

Each version (1.x.y) of TSB supports the Kubernetes and OpenShift versions that were currently supported when the minor version was first released (1.x.0). In addition, Tetrate makes best efforts to support earlier K8s and OpenShift versions for backwards-compatibility, and support later K8s and OpenShift versions in subsequent patch releases:

TSB Release Support dates

TSB VersionGeneral AvailabilityEnd of General SupportKubernetes VersionsOpenShift Versions
TSB v1.6.x1 January, 202331 December, 20231.22 - 1.26 [1]4.7 - 4.12 [1]
TSB v1.5.x15 July, 202215 July, 20231.19 - 1.244.6 - 4.11
TSB v1.4.x1 November, 202131 October, 20221.18 - 1.21 [2]4.6 - 4.8
TSB v1.3.x1 June, 202131 May, 20221.18 - 1.204.6 - 4.8
TSB v1.2.x1 May, 202130 April, 20221.18 - 1.20 [3]4.6 - 4.8
TSB v1.1.x1 April, 202131 March, 2022
TSB v1.0.x1 March, 202128 February, 2022


  • [1] Kubernetes 1.25, 1.26 and OpenShift 4.12 require TSB 1.6.1 or later
  • [2] Kubernetes 1.21 and TSB 1.4.x - supported with caveats, please refer to Tetrate support
  • [3] Kubernetes 1.19 and 1.20 and TSB 1.2.x - supported with caveats, please refer to Tetrate support

TSB Component Version Matrix

Tetrate Service Bridge comes with the following open source components

TSBIstioEnvoySkyWalkingZipkinOpenTelemetry Collector