---
title: >-
  Checkout and Customer Account UI extensions available by default in new
  development shops - Shopify developer changelog
description: >-
  Shopify’s developer changelog documents all changes to Shopify’s platform.
  Find the latest news and learn about new platform opportunities.
source_url:
  html: >-
    https://shopify.dev/changelog/posts/checkout-and-customer-account-ui-extensions-available-by-default-in-new-development-shops
  md: >-
    https://shopify.dev/changelog/posts/checkout-and-customer-account-ui-extensions-available-by-default-in-new-development-shops.md
metadata:
  effectiveApiVersion: 2026-01
  affectedApi: []
  primaryTag:
    displayName: Platform
    handle: platform
  secondaryTag:
    displayName: Update
    handle: update
  indicatesActionRequired: false
  createdAt: '2026-03-11T14:36:30-04:00'
  postedAt: '2026-03-13T14:45:00-04:00'
  updatedAt: '2026-03-13T14:39:57-04:00'
  effectiveAt: '2026-03-20T12:00:00-04:00'
---

March 13, 2026

# Checkout and Customer Account UI extensions available by default in new development shops

DateMarch 13, 2026

Version[2026-01](https://shopify.dev/changelog?api_version=2026-01)

FlagsUpdate

SurfacesPlatform

We are ending the developer preview for checkout and customer account UI extensions. With this update:

* All **new** development shops on the Shopify Plus plan have access to checkout UI extensions
* All **new** development shops on all plans have access to customer account UI extensions
* All **existing** development shops will not be affected by this change