Here comes Shopify's first open-source reference theme, which runs 35% faster than Shopify's most popular theme and uses all the new features of online store 2.0.
Dawn is an ultra-lightweight, mobile-optimized theme, which maximizes flexibility while minimizing complexity and maintaining simplicity. Your development team can use dawn as a model when developing your theme.
Dawn is a reference topic for Shopify, built for performance, flexibility, and ease of use. It uses the features of online store 2.0, including JSON templates, and supports application blocks and parts of all pages.