Premieres April 2025. The new PV is here. Check out the ANN article for additional information. Synopsis from AniList:
The earth where mankind has disappeared and civilization has collapsed.
In a world of ruined towns and revived nature, one historic hotel remains.
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This is the story that unfolds in a hotel where humanity has disappeared.
So, I am a huge sucker for post-apocalypse stories, so I am already intrigued from that. Additional points that this is an anime-original. Finally, this is being made by Cygames Pictures, whose most recent original anime was Bang Brave Bravern. So, I think I am at least willing to check it out.