25/08/2026
If you've been paying attention to what Shopify is doing with its theme architecture, you'll have noticed Horizon. It launched as part of the Summer 2025 Edition and it's the most significant change to how Shopify themes are built since Online Store 2.0 arrived in 2021.
It's worth understanding what's actually different, because the answer affects decisions about new builds, redesigns, and whether stores on older themes should be thinking about moving.
Horizon is a framework, not just a theme
This is the important distinction to make upfront.
Horizon isn't a single theme you install. It's a new theme framework that powers a collection of free themes. At launch Shopify released ten themes built on the Horizon framework, with more being added. The framework itself defines how blocks are structured, how the editor works, and how AI tools integrate with the design system.
The themes built on it all share the same underlying architecture. Different aesthetics, same foundation.
If you've been paying attention to what Shopify is doing with its theme architecture, you'll have noticed Horizon. It launched as part of the Summer 2025 Editio