The Costco Kirkland Signature new products 2026 launches have been one of the most commercially exciting chapters in the private label's history — an action-packed year at the warehouse retailer that has delivered genuinely novel Kirkland additions across bakery, frozen, beverages, and prepared foods. Kirkland Signature is not a static brand. It is a constantly evolving commercial commitment from Costco's buying team — the institutional promise that the Kirkland label will of