"Offer codes for in-app purchases are a powerful new way to run promotions, give free or discounted access, and engage with customers. Set customer eligibility and expiration dates for up to 1 million codes per quarter. Starting March 26, 2026, offer codes will replace promo codes for in-app purchases, excluding app-level promo codes. For auto-renewable subscriptions, you can now create offer codes that won't auto-renew after the promotional period"

Didn't know IAP promo codes were going away!