2 different demon slayer this year?

I think that it could be 2 demon slayer entries on the site for this year because it will be to different shows.Oct 10th will be released the Demon Slayer Mugen train Arc that consists in 7 episodes. The first one is completely new for anime watchers and the last 6 episodes are about the Mugen train movie but with new scenes. Then on Dec 5th it will be released the Demon Slayer Entertainment District Arc. The second season of the same. Anyone can help me to add the new entry the mugen train arc?