Link for the 2023 demo? currently the only demo is the 2021 which is lacking content/bugged.
Viewing post in The Transylvania Adventure of Simon Quest (Demo) comments
Yes, I saw your other message, and your posts to me on Twitter as well, but I'll answer again- The 2023 build isn't a "demo" or available for wide release- it's a full slice of the game. A new demo will come in the future. The 2021 demo may have a few bugs here and there, but it's certainly not lacking in content for a demo. It has a full region of the game, 2 bosses, and a bunch of extras.
I probably would expect the same amount of content in a new demo as the previous one.