Shopify Fall ’26 Edition: what matters for merchants and developers

Shopify released its Fall ’26 Edition, named “Exponential”, on October 28, 2026. Like every Edition it is a long list, and most items will not change your week. We read the merchant and developer announcements end to end and picked the ones we think deserve your attention, with our honest view on each.

The short version

• For store owners: look at Shopify Protect and the new local payment methods first. Both can add revenue or save money without a redesign.
• For brands selling through AI assistants: fill in your store’s knowledge base on the new Agentic page in the admin. It decides what assistants say about you.
• For anyone planning a new theme: the new theme architecture is the biggest change to how Shopify themes are built since Online Store 2.0. Learn it now, but do not rush to rebuild a theme that works.

For merchants

Shopify Protect gets a Rule Builder

Shopify Protect now brings fraud and dispute tools into the admin, including a Rule Builder where you write your own fraud rules. Until now, many stores paid for a separate fraud app or reviewed risky orders by hand.

Our take: if chargebacks cost you money every month, this is the first thing to try. Start with two or three rules based on the fraud you actually see, for example a mismatch between billing and shipping country on high-value orders, and review the results before you add more. Over-strict rules cancel good orders, which costs more than the fraud they stop.

Seven new local payment methods

Shopify Payments adds Alipay, WeChat Pay, MB WAY, OXXO, Satispay, Scalapay and GrabPay. These are the methods shoppers in China, Portugal, Mexico, Italy and Southeast Asia expect to see.

Our take: if you already sell in those markets through Shopify Markets, turn on the method that matches each market and watch checkout conversion for that country. A missing local payment method is one of the most common reasons international shoppers leave at the last step. Check that your theme’s payment icons in the footer and cart still look right after you add them.

Shop Promise for US stores

Shop Promise is a free program for eligible US stores that shows delivery and returns badges to shoppers.

Our take: badges only help when you can keep the promise. If your fulfilment times are steady, join. If they vary a lot by season, fix that first, because a missed promise does more harm than no badge.

A rebuilt Sidekick, a new admin and Canvas

Sidekick, Shopify’s built-in assistant, was rebuilt. It can now run calculations, write code, search the web and remember what you teach it, and it sits as a floating chat on every admin page in the refreshed admin design. Canvas, in early access, shows your whole store on one canvas and lets you change it with Sidekick, using your theme’s design system.

Our take: Sidekick is useful for reports, bulk edits and first drafts. For theme changes, treat what it produces like work from a new junior colleague: try it on an unpublished copy of your theme, check it on a phone, then publish. Canvas only works as well as the theme’s design system, which brings us to the developer side.

Selling through AI assistants

Shopify added connectors for nine assistants, including ChatGPT, Microsoft Copilot, Google Gemini, Grok and Perplexity, plus shop.md, a shopping skill that turns an assistant into a personal shopper for Shopify stores. A new Agentic page under Sales channels shows whether your products are eligible for Shopify Catalog and lets you publish facts about your store that assistants use when they answer shoppers.

Our take: fill in that knowledge base this week. Shipping times, return rules, sizing advice and what makes your products different should come from you, not from whatever an assistant guesses. We cover the full picture in Agentic commerce on Shopify: what store owners should do now.

For developers

A new theme architecture

This is the announcement we spent the most time on. In the new architecture, the page structure lives in the Liquid template instead of a separate JSON file. Themes are built from blocks with typed contracts, support partial updates, ship with markdown files that explain the theme to agents, and include Tailwind out of the box. Shopify says these themes are ready to be edited with Sidekick in Canvas.

Our take: this is a real shift. Typed block contracts should make themes more predictable to edit, for people and for tools. Built-in Tailwind will divide theme developers, and we expect a period where both styles of theme live side by side. Documentation becomes part of the theme itself, which we like: a theme that explains its own sections is easier to hand over to a merchant’s team.

What we recommend:

• Do not rebuild a working theme just for this. Nothing in the announcement says Online Store 2.0 themes stop working.
• If you are planning a new theme for next year, ask your developer whether it will be built on the new architecture, and why or why not. We are happy to talk it through: see Shopify theme development.
• Clean up now. Themes that already use sections and blocks consistently, with settings instead of hard-coded content, will be the easiest to move later.

For theme developers, including us with our theme Mars, the question is when to adopt it, not whether.

Hydrogen is generally available, on any stack

Hydrogen was rebuilt and is now generally available. It works with any framework and runtime, and Vercel Shop is also generally available.

Our take: headless still is not the right choice for most stores. A good Liquid theme is faster to build, cheaper to run and easier for your team to edit. Hydrogen makes sense when you need a fully custom front end, for example a content-heavy brand site or a store that shares a front end with other systems. The change here is that choosing Hydrogen no longer locks you into one hosting setup.

WebMCP on every storefront and checkout

Every Liquid and Hydrogen storefront and checkout now exposes a set of WebMCP tools that browser-based agents can use to shop.

Our take: this is another reason to keep business rules out of theme JavaScript. If a minimum order quantity or a gift-with-purchase rule only exists in your theme’s scripts, an agent shopping through these tools may never see it. Rules that must always apply belong in Shopify Functions and checkout validation.

Better security tools for apps and partners

A single Shopify CLI command now checks an app for common security problems, and collaborator requests from partners now show more context: how old the partner account is, where it was registered, where the request comes from and roughly how many stores the partner works with.

Our take: both are overdue and welcome. Merchants should read that context before accepting any collaborator request, including ours. Apps can also now send their own events to Shopify Analytics, so merchants can see what an app does next to their store numbers instead of in a separate dashboard.

What we would do this month

1. Set up two or three Shopify Protect rules and review them after two weeks.
2. Turn on the local payment methods for markets you already sell in.
3. Fill in your store facts on the Agentic page.
4. Move any “must always apply” cart rule from theme code to a Shopify Function.
5. If a new theme is on next year’s plan, read up on the new architecture before you brief anyone.

Sources

• Exponential: Shopify’s Fall ’26 Edition (Shopify)
• The Fall ’26 Edition for developers (Shopify)
• Shopify Editions Fall ’26 (Shopify)