Yup, Notion did it again: they entirely changed the way Notion is structured to accommodate this feature and possibly more to come. A Notion database can now support multiple data sources, meaning: a single database can house multiple data sources — basically, multiple originals together in one place.

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While this was likely a massive development effort for Notion, end users won't notice many changes yet. The primary benefit is simplified permission management—you can set permissions (like "Can Edit Content") for multiple data sources in one place. Since permissions apply to databases rather than individual sources, each source automatically inherits permissions from its parent database.

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I realize this might be a bit confusing, so I highly recommend watching Thomas Frank's video on the subject ↓

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For automation nerds, this also comes with an updated API version (2025-09-03) which unlocks support for this new feature. More info on how to upgrade here.

P.S. worth to mention this is not a way to bring mutliple data sources into one single unified view (the only way to do so currently is in the Home feature) 😉