We've updated Polaris, making it a unified web component toolkit for all Shopify surfaces: Admin, Checkout, Customer Accounts. Additionally, Polaris is now smaller, faster, framework-agnostic, and always up-to-date via Shopify’s CDN. This update is in early access.
This is a companion discussion topic for the original entry at https://shopify.dev/changelog/polaris-unified-web-components-are-now-available-early-access