Microsoft is now rolling out Windows 10 build 19546 for devices enrolled in the Fast ring of the Windows Insider Program. This is the third preview releasing as part of the 20H2 development, but because updates available through the Fast ring are no longer tied to a specific feature update release, it’s unclear if all these changes will be included with the next major release.

Windows 10 build 19546, according to the company, only fixes several problems with Timeline no showing activities, Outlook search, Task View reliability, and issues processing Spatial sound.

Alongside the release of build 19546, Microsoft is also making available a new version of the Windows Calculator app that includes a preview of a new graphics mode to explore linear algebra.

Using the new graphics mode, you can try things like plot one or more equations on the graph, add equations with variables, analyze the graph, and more.

In addition, the company is making available a new Indexer Diagnostics app designed to help you troubleshoot and quickly resolve problems with Windows Search.

Microsoft is listing the complete set of improvements, fixes, and known issues for Windows 10 Insider Preview build 19546 at the Windows Blog.

Download Windows 10 build 19546

Although there are no ISO files for Windows 10 build 19546, the update is available immediately through the Fast ring. This preview build will download and install automatically on your device, but you can always force the update from Settings > Update & security > Windows Update, and clicking the Check for updates button.