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Install UK localization as an extension to the base app

Important

Some of the functionality described in this release plan has not been released. Delivery timelines may change and projected functionality may not be released (see Microsoft policy). Learn more: What's new and planned

Enabled for Public preview General availability
Admins, makers, marketers, or analysts, automatically Sep 2025 Oct 2025

Business value

The upgraded localized version for the United Kingdom is available as an extension.

Removing country-based customizations from the base app helps organizations save time and reduce costs during implementation. This change benefits organizations that operate in multiple regions with different regulations by making it easier to build PTEs and connect environments. Delocalization also helps organizations access ISV solutions without restrictions.

Feature details

The localized version for the UK is now available as a set of extensions on the W1 base app. This version includes a data upgrade feature to simplify the transition from the previous localization. This release moves the product closer to full delocalization, so ISVs can reach a wider market. Some features move to the base app or become global apps, while others stay specific to the GB market.

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Additional resources

United Kingdom local functionality in the British version (docs)