I thought we might be able to expose the "Scheduled date" field as a select list of grouped filters (e.g. Scheduled publication: Any (default), only scheduled content, Within the next week, Within the next month...) but the exposed/group filter option doesn't seem to work with a date field. That may be a bug...
Follow up in the other thread by @herbdool:
Notice: Undefined index: #states in views_handler_filter->build_group_form() (line 963 of /app/core/modules/views/handlers/views_handler_filter.inc). Warning: Invalid argument supplied for foreach() in views_handler_filter->build_group_form() (line 963 of /app/core/modules/views/handlers/views_handler_filter.inc).
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Pulled out a bug discovered on this issue.
Follow up in the other thread by @herbdool: