Shopify apps made with Polaris start on Polaris 2
A new Shopify app with Polaris admin pages now loads polaris-2.js, Shopify's Polaris 2.0, which matches the redesigned admin and takes later 2.x releases, with @shopify/polaris-types ^2.0.0. AutoTable and AutoForm from @inferencebureau/apps-sdk/polaris work on both.
An app made earlier loads polaris.js, which stays on Polaris 1.1. To move it, change the script in web/app/layout.tsx to https://cdn.shopify.com/shopifycloud/polaris-2.js and @shopify/polaris-types to ^2.0.0. Review readiness and new environments' starters recognise either script.
More in Polaris.