Microsoft is now rolling out Windows 10 build 18912 for device enrolled in the Fast ring of the Windows Insider Program. This is the 15th preview releasing for testers included in the 20H1 development, also it delivers a few new improvements.

Windows 10 build 18912, based on the company, is really a minor update which includes a choice (Caps + Ctrl + D) to permit Narrator to show you the title of the page from the hyperlink.

Additionally, this flight is also fixing with green screen problems, issues with Focus Assist, remote desktop, emoji and clipboard history, Settings crashes within the Graphics page so when double-clicking the update icon from taskbar, and more.

Microsoft is listing the entire set of improvements, fixes, and known issues for Windows 10 Insider Preview build 18912 at the Windows Blog.

Download Windows 10 build 18912

Although there aren't any ISO files for Windows 10 build 18912, the update can be obtained immediately with the Fast ring. This preview build will download and install automatically in your device, but you can invariably force the update from Settings > Update & security > Windows Update, and clicking the Look for updates button.
Warning: It's not recommended to install pre-releases of Windows 10 in your primary machine. If you're likely to test this build, make sure to create a backup of your files before proceeding.