the schedule for updates
https://care-cdn.prodsupportsite.a.intuit.com/forms-availability/turbotax_fed_windows_individual.html
shows the update for 02/25/2021 should contain or have available
the form 1041 schedule K-1
yet, when running TT on windows no update is provided.
this would be the 2nd or 3rd delay of this form update.
The schedule changed for 2020 which accounts for the delay.