Related Clues:

• Schedule placeholder initials
• "More info coming" initials
• "Watch this space" letters
• 'Watch this space' letters
• As yet unknown, for short
• TV guide abbr
• "We'll figure it out," on a TV schedule
• "We'll let you know later," on a TV schedule
• Up in the air, on a schedule: Abbr
• "More info soon" letters
• Unfilled, on a TV schedule
• Undecided schedule inits
• Undecided initials
• Undecided, on a schedule: Abbr
• Unknown thus far, on a TV sched