Google holiday update: UCP checkout hub adds cart transfer and testing

What was reported

Google said UCP already enables direct checkout for hundreds of thousands of brands across Google. Merchants using the Merchant Center UCP hub can now enable cart transfer to a merchant site and checkout flow testing, rolling out in the US with Australia and Canada early next year. Brands owned by the Coach parent company sell via UCP checkout in AI Mode and Gemini.

Primary source: blog.google, read 4 Nov 2026.

Where it sits in the matrix

• Google AI Mode and Gemini checkout (UCP): 1 live, 0 pilot, 3 announced and 0 not supported in the matrix.

Other items from September 2026

• 30 Sep 2026 Mastercard adds trust and intelligence services to Agent Pay, working with Skyfire and Cloudflare
• 30 Sep 2026 PayOS opens every product, including agentic payments, through a self-serve portal
• 23 Sep 2026 x402 specification adds an exact scheme for Bitcoin Lightning
• 22 Sep 2026 PayPal announces checkout partnership with Meta's Muse