July 2024 release: Optimistic variants, Storefront API 2024-07

Welcome to Hydrogen's release for July 2024.

The coinciding 2024-07 Storefront API is now supported and we’re excited to release another tool to help build optimistic UI — this time for making snappy product forms!

Faster Product Forms with useOptimisticVariant

Following the release of Optimistic Cart last month, Hydrogen now provides optimistic variant support with a new useOptimisticVariant hook. This makes switching between variants instantaneous.

Upgrade with just a few lines of code - see the upgrade guide in the release notes.

Updates, optimizations, and fixes

As always, this month’s release brings you a range of additional optimizations, bug fixes, and quality-of-life tweaks:

• Add sellingPlanId support to BuyNowButton (#2254) - thanks @dvisockas!
• New customer account session commit pattern (breaking) (#2137)
• VariantSelector improved handling of options (breaking) (#2113)
• Update Remix to 2.10.0 which included fixes to infinite loading error (#2290)
• Types fixes for optimistic cart (#2132)
• CLI: Vite bundle analyzer (#2138)
• CLI: Support CSS options in Vite projects (#2245)

To take advantage of all the latest features and improvements in Hydrogen, just run npx shopify hydrogen upgrade. That’s it for the July release — see you in August!