[PurpleRamen]

Properties are not really new, it's just a more dedicated name for frontmatter, which already exists since the beginning, and where tags are saved. But it also comes with a nice interface and integrated support for fields outside of tags, which until now was an area where you were depending on plugins like dataview. It seems on the long run, they plan to shift Obsidian more into the direction of Notion Databases, and delivering an improved version of dataview out-of-the-box.