---
title: "Early access: The re-engineered shopify app dev - 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/early-access-the-re-engineered-shopify-app-dev
  md: https://shopify.dev/changelog/early-access-the-re-engineered-shopify-app-dev.md
---

[Back to Developer changelog](https://shopify.dev/changelog)

May 21, 2025

Tags:

* Tools

# Early access: The re-engineered `shopify app dev`

The Shopify CLI `app dev` command enables development, preview, and testing of your app on development stores. This command includes a number of improvements when used with early access to the [Next-Gen Dev Platform](https://shopify.dev/beta/next-gen-dev-platform):

* All changes are isolated to your chosen development store.
* All changes to [app configuration](https://shopify.dev/docs/apps/build/cli-for-apps/app-configuration) can now be previewed, without the need to run `app deploy`.
* Extension additions and deletions are now included, without the need to restart `app dev`.
* Your app is now automatically installed on your chosen development store.
* Access scope changes are automatically accepted on your chosen development store when you change them in the `shopify.app.toml`.
* The app preview created during `app dev` remains on your development store until you run `app dev clean` or uninstall the app.
* The Dev Console in the Shopify Admin will inform you about any active app previews on the store.

**Note**: For existing apps, the behavior of `app dev` is currently unchanged.

For more information, see documentation on [improvements to the `app dev` command](https://shopify.dev/beta/next-gen-dev-platform/shopify-app-dev).

Please report any issues and provide your feedback about these updates [on the Shopify Developer Community](https://community.shopify.dev/new-topic?category=shopify-cli-libraries\&tags=new-app-dev-command).