Google's study tools now live under a "Gemini Notebook" name
A 15 September round-up of new study and learning features sits on a gemini-notebook product path on Google's blog, rather than the NotebookLM path that covered the same ground last year. The post itself is short on specifics in the part that loaded for us, which is its own hint about how these rollouts are being run.
Names drift, and small products get absorbed into platform brands without a migration notice. If you keep a library of sources in a note-taking AI, the practical risk is not the rename — it is the feature set moving between the free and paid tiers while you are not looking. Worth re-reading the plan you bought against the current feature page once a year.