When the functionality below will be available ?

https://www.azurecurve.co.uk/2025/01/new-functionality-in-microsoft-dynamics-365-business-central-2025-wave-1-post-foreign-currency-adjustments-to-unrealized-gain-and-loss-accounts/

When you adjust currency exchange rates for bank accounts, you can choose to post these adjustments to realized or unrealized gain/loss accounts. This option is available on the Bank Account card in the Posting FastTab.