Is it possible to add additional in-app purchase options after app is submitted?

I am looking to release an app that will have additional sticker packs as IAP, but only have 2 additional packs ready. If the app does well and I want to add a 3rd and 4th sticker pack for example, is that possible? Or can you include nonfunctioning IAP that say coming soon or similar? Thanks in advance.

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>possible to add additional in-app purchase options


Yes. See ASC Help on Add an in-app purchase


Do not add placeholder products to your app.

What you want to do is gracefully handle an in-app purchase that does not yet exist or has been deleted. You can and should validate your in-app purchases at launch and confirm that the App Store is available. For in-app purchases that you are adding or might delete, you want them to gracefully go away if the App Store does not validate them.