So next movie will have
>Inosuke/Kanao vs UM2
>Genja/Tokito/Sanemi/Jimejima Vs UM1
>Mitsuri/Obanai Vs UM4

I don't know whether they'll include Tanjiro/Guyu Vs Muzan or leave it for the next movie. Ending the movie or starting the last one with their meet up would be equally good, but due to runtime constraints, it might be better to do it in the second movie