Internal memo reveals that NotebookLM’s most exciting features could arrive any day now

Google's AI-powered research assistant, NotebookLM, is one of the few AI productivity tools that offers an entirely unique set of features and is genuinely game-changing for productivity. The AI tool was launched in 2023, so it's still fairly new. Given NotebookLM's success, their team has been constantly directing its efforts toward improving the tool by adding new features, fixing quirks, and improving the overall user experience.

NotebookLM's team has been teasing a lot of features in the last few weeks, but they've never really hinted at how soon these features will roll out. Fortunately, a new leaked internal memo has finally shed light on what’s coming, and it looks like NotebookLM's most exciting upgrades might be coming any day now.

NotebookLM’s finally giving Audio Overviews the flexibility they were missing

An alleged internal memo shared by @numeriahmet on X (formerly Twitter) reveals a bunch of exciting NotebookLM upgrades.

Though the primary focus of the memo is a feature that's been talked about a lot before (more on that below), Audio Overviews is getting a major upgrade. A couple of days ago, NotebookLM added the option to generate Audio Overviews in different languages.

Strangely, since Audio Overviews was first introduced in NotebookLM, users have only been able to generate one audio per notebook. If you'd like to generate another, the only option is to delete the existing one and then generate a new one.

Though this wasn't too massive of a problem for some, users who preferred generating separate Audio Overviews for different sections or audiences were left with a clunky, limited workflow. Similarly, multilingual users who needed to produce content in more than one language had no easy way to do so without constantly overwriting their previous audio.

That's finally changing. The leaked memo mentions that NotebookLM is introducing upgrades to the Studio panel, which includes two new features: Multiple audio overviews and Artifact sharing. The former solves the issue I just described above, allowing users to "create and store multiple versions of outputs from the same sources in a single notebook." Along with finally having the ability to generate Audio Overviews in different languages from the same sources, users will also have the option to create Audio Overviews from a subsection of their sources.

The Artifact Sharing feature will allow users to generate shareable links for Audio Overviews and Mind Maps, which is a welcome change and will make NotebookLM far more collaborative. Though NotebookLM recently got public links, this change means users won’t have to share an entire notebook just to showcase a single artifact.

The much-awaited Video Overviews is the real star of the show

The main focus of the internal memo is the Video Overviews feature, though. I recently mentioned it as an upcoming feature I can't wait to use in NotebookLM, and it looks like the wait might finally be over. Google announced Video Overviews during Google I/O 2025, and NotebookLM users, including me, have been looking forward to the feature ever since.

The internal document explains that Video Overviews will let users turn documents, slides, charts, and more into "long-form video essays." These videos will be narrated by an AI voice (presumably similar to the AI hosts in Audio Overviews). If you're familiar with Audio Overviews, chances are you've used the Customize option, which lets you nudge the AI hosts to tailor the overview toward a specific source, topic, or even audience. You'll be able to do the exact same with Video Overviews, and will have the option to specify the topics to focus on, describe your target audience and learning goals, and more.

The document suggests that Video Overviews will roll out to all users in English, and support for more languages is on the way. It also suggests that these features are being rolled out gradually, starting today (June 30th). Remember that this information comes from a leaked internal memo, so it's best to take the timeline with a grain of salt until confirmed by Google itself.