I'm not watching the show at this point but have seen clips of Laura and Tracy on YouTube. Seeing the date of Luke's memorial (and noting in the ratings that the show lost 100,000 viewers after Steve Burton's last scene) my guess is that this is going to be an arc for the sweeps season that starts on January 25th for February. And I know that Frank has said they no longer make sweeps a big issue but as a viewer (at least in 2020) the stories are much more exciting during sweeps than during other times. To me it seems the last gasp for the show- particularly if the story doesn't entail seeing Tony Geary return.
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Spoilers say a big gathering at Luke's Club. Probably some characters from the past will show up. I don't look for Luke to make a surprise entrance but someone might surprise everyone.