Microsoft yesterday released Windows 10 Mobile build 14366 for PC for the fast ring insiders. You can see official change log and know issues by clicking here.

Changelog:

New Microsoft Edge features

New web platform features

  • Fixed an issue that could result in abnormally high CPU usage when open to a page with many animated GIFs, as well as an issue resulting in certain captchas not displaying correctly.

Known issues in build 14366

  • On a PC, if you click on a file download link outside of Microsoft Edge, sometimes Edge will open a tab and close it without doing anything. The workaround is to go to the Download pane and start the download there by clicking “Save” or “Save As”.