Google Play claims that the implementation of their new “pre-registration rewards” has around the same implementation as their “promo codes”. Noting that promo codes are supported by Unity IAPs. I wished to ask if I could also expect the “pre-registration rewards” to work through Unity IAPs, and if so, where I could read more about it?
Source pre-registration rewards: Build awareness for your apps with pre-registration - Play Console Help
Source Unity-IAP release notes which state support for “promo codes”: https://forum.unity.com/threads/unity-iap-store-package-1-22-0-is-now-available.415517/