Apple announced a Core Technology Fee of €0.50 for each first annual install per year over a 1 million threshold in the EU: https://www.apple.com/newsroom/2024/01/apple-announces-changes-to-ios-safari-and-the-app-store-in-the-european-union/

Will this fee be walked back at all in 2024?

If a change to remove the fee is announced by EoY 2024 but takes effect in 2025, I will resolve YES. Changes to decrease the fee or reduce the number of companies/individuals affected will also resolve YES.