WWE has yet to officially announce any matches for the TLC PPV.
Dave Meltzer reported in the latest edition of the Wrestling Observer Newsletter that the reason for this is due to Vince McMahon not making the final decisions yet.
Per the report, nothing else is scheduled for the show outside of the three advertised matches that are booked.
McMahon has not yet made the decisions on which matches will go on as McMahon’s new philosophy is that PPVs are to boost WWE Network signups. The signups come the last day leading into the show as opposed to before, so there’s no need to rush match announcements.
The TLC pay-per-view event takes place on Sunday, December 15, 2019 in Minneapolis at the Target Center and will air on the WWE Network and some traditional pay-per-view outlets.