Hi @arvind
AEM does not provide a direct feature to view a list of pages scheduled for activation. The "Manage Publication" dialog box is used for configuring and managing the replication of pages, but it does not have a built-in functionality to display a list of scheduled activations.
Also there is no property in jcr:content node that gets added for Publish later.
One way to see is to check the Running workflow instances. See the pages that are scheduled for activation. In my case the model used is 'Publish Content Tree'.
Thanks