The Costco winter new items 2026 wave is arriving on warehouse floors right now — the October and November seasonal rotation that brings the holiday-oriented food discoveries, comfort food additions, and gift-season finds that the member community has been posting about with the specific urgency that seasonal Costco items always generate: if you see it and want it, buy it today. At Costco, "seasonal" doesn't always mean three months. Some product seasons seem to have the life