Checkout SDK Updates

Web SDK — v1.6.2 (2026-09-10)

PayPal Complete Payments (PPCP): a new standalone SpreedlyPPCP entry point, exposed from both the Hosted Fields and Express Checkout bundles as window.SpreedlyPPCP, for checkout with PayPal's JS SDK v6. The merchant loads PayPal's web-sdk/v6/core; the SDK runs the PayPal instance and renders the eligible branded buttons as PayPal's web components (paypal, venmo, payLater, payPalCredit), then drives the payment session on click. The merchant's backend creates the order and captures it after approval. Supports vaulting with and without purchase, and Pay Later messaging. See docs/ppcp/ (integration guide and API reference).

ACH and offsite tokenization now POST to payment_methods.json so they work from the merchant page (CORS). Card iframe tokenization is unchanged.

3DS1 redirect/fallback: gateway-supplied checkout_form HTML is now rendered inside an isolated iframe.