Related Clues:

• 'Details to come . . .'
• Not yet known, for short
• Inf. to come
• Sked "Don't know yet"
• "More info soon"
• Letters on an incomplete schedule
• 'IDK yet,' on a schedule
• Schedule placeholder initials
• "More info coming" initials
• "Watch this space" letters
• Agenda placeholder
• Brief "Don't know yet"
• Schedule placeholder (Abbr.)
• 'Watch this space' letters
• As yet unknown, for short