> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes.md).

# Release Notes

Release notes for the OS Open TOID product over the last year.

{% hint style="info" %}

## OS Open TOID September 2026 release note now available

We are pleased to confirm that the delay to the 14 September 2026 release of OS Open TOIDs (Epoch 55) has now been resolved. The product was successfully published on 06 October 2026, and the accompanying release note is now available.
{% endhint %}

## [OS Open TOID – September 2026 release note](/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/september-2026-epoch-54.md)

This release note provides information about the September 2026 (Epoch 55) release of OS Open TOID.

## [OS Open TOID – August 2026 release note](/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/august-2026-epoch-54.md)

This release note provides information about the August 2026 (Epoch 54) release of OS Open TOID.

## [OS Open TOID – June 2026 release note](/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/june-2026-epoch-53.md)

This release note provides information about the June 2026 (Epoch 53) release of OS Open TOID.

## [OS Open TOID – May 2026 release note](/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/may-epoch-52.md)

This release note provides information about the May 2026 (Epoch 52) release of OS Open TOID.

## [OS Open TOID – March 2026 release note](/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/march-2026-epoch-51.md)

This release note provides information about the March 2026 (Epoch 51) release of OS Open TOID.

## [OS Open TOID – February 2026 release note](/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/february-2026-epoch-50.md)

This release note provides information about the February 2026 (Epoch 50) release of OS Open TOID.

## [OS Open TOID – January 2026 release note](/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/january-2026-epoch-49.md)

This release note provides information about the January 2026 (Epoch 49) release of OS Open TOID.

## [OS Open TOID – December 2025 release note](/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/december-2025-epoch-48.md)

This release note provides information about the December 2025 (Epoch 48) release of OS Open TOID.

## [OS Open TOID – October 2025 release note](/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/october-2025-epoch-47.md)

This release note provides information about the October 2025 (Epoch 47) release of OS Open TOID.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.os.uk/os-downloads/products/buildings-and-infrastructure-portfolio/os-open-toid/release-notes.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.