We're updating the format of versioning query parameters appended to store assets such as CSS and JS. Previously, some assets used a bare numeric query parameter, (for example, ?108), while others used a key-value format with the v query parameter. Moving forward, all asset URLs will consistently use the ?v=VERSION_STRING format for versioning.
The new format will be returned by liquid tags and will be present in Shopify-rendered storefront HTML.
This is a companion discussion topic for the original entry at https://shopify.dev/changelog/standardization-of-asset-url-version-parameters