1) Abbreviation in tv listings 2) Agenda placeholder 3) Ambiguous schedule info 4) As yet unscheduled on a sked 5) Ask me later on a schedule 6) Check back later in listings 7) Concert info 8) Concert-schedule letters 9) Details will follow 10) Iffy schedule letters 11) Info to come 12) It fills a blank in a sched Found on https://www.crosswordclues.com/clue/tba