The updater already supports modes in which you either need to confirm each update, or in which it gives you some configurable time before proceeding to decide if you want that update. The problem is, only the backend supports it and it’s not even remotely user friendly and it is not much documented.
So yes, it is planned and yes, if you want to be brave and test it without the UI, feel free. You can have a look into the updater.sh script or here: https://gitlab.labs.nic.cz/turris/updater/blob/updater-ng/src/pkgupdate/interaction.txt, section approvals.