> 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/addresses-and-names-portfolio/addressbase-core/release-notes.md).

# Release Notes

{% hint style="info" %}
Any interruptions or data issues impacting the AddressBase Core product will be documented on the [AddressBase Core Data Issues, Service Disruption and Planned Maintenance page](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-data-issues-service-disruptions-and-planned-maintenance.md).
{% endhint %}

## [AddressBase Core – 23 June 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/23-june-2026.md)

This release note provides information about the 23 June 2026 release of AddressBase Core.

## [AddressBase Core – 16 June 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/16-june-2026.md)

This release note provides information about the 16 June 2026 release of AddressBase Core.

## [AddressBase Core – 09 June 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/09-june-2026.md)

This release note provides information about the 09 June 2026 release of AddressBase Core.

## [AddressBase Core – 02 June 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/02-june-2026.md)

This release note provides information about the 02 June 2026 release of AddressBase Core.

## [AddressBase Core – 26 May 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/26-may-2026.md)

This release note provides information about the 26 May 2026 release of AddressBase Core.

## [AddressBase Core – 19 May 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/19-may-2026.md)

This release note provides information about the 19 May 2026 release of AddressBase Core.

## [AddressBase Core – 11 May 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/11-may-2026.md)

This release note provides information about the 11 May 2026 release of AddressBase Core.

## [AddressBase Core – 05 May 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/05-may-2026.md)

This release note provides information about the 05 May 2026 release of AddressBase Core.

## [AddressBase Core – 28 April 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/28-april-2026.md)

This release note provides information about the 28 April 2026 release of AddressBase Core.

## [AddressBase Core – 21 April 2026 release note](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/release-notes/21-april-2026.md)

This release note provides information about the 21 April 2026 release of AddressBase Core.


---

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