是否可以将贴纸包升级为 iMessage 应用程序？
Is it possible to upgrade a sticker pack into an iMessage app?
以后是否可以将现有贴纸包 upgrade/convert 放入成熟的 iMessages 应用程序中？
根据 Apple 的说法，答案是肯定的：
Can I update my standalone sticker pack into a standalone iMessage app?
Yes, you may submit a sticker pack to the App Store for iMessage, and later submit an iMessage app as an update to the existing app. Before doing this, be sure to understand the App Review Guidelines. You can find information about Replacing Your App with a New Version in the iTunes Connect Developer Guide.
以后是否可以将现有贴纸包 upgrade/convert 放入成熟的 iMessages 应用程序中？
根据 Apple 的说法，答案是肯定的：
Can I update my standalone sticker pack into a standalone iMessage app?
Yes, you may submit a sticker pack to the App Store for iMessage, and later submit an iMessage app as an update to the existing app. Before doing this, be sure to understand the App Review Guidelines. You can find information about Replacing Your App with a New Version in the iTunes Connect Developer Guide.