Windows 10 Insider Preview Build 17677 is available to those in the Fast ring, offering improvements to Microsoft Edge, mobile broadband connectivity, and more.

This build was unexpected: Dona Sarkar tweeted yesterday that a Microsoft had found some rollback issues in the build so the team decided to head out early for the long Memorial Day weekend. But it turns out the problem wasn’t rollback issues, it was a deployment issue that could be fixed on the server-side. And was. So here we are.

Anyway, here’s what’s new.

Microsoft Edge improvements. Microsoft Edge’s weird “Settings and more” menu has been organized into groups, with each menu item getting its own icon. Additionally, the Jump List that no one knows how to use will now display your Top Sites, and you can label and rename the groups of tabs you’ve set aside.

Narrator improvements. Narrator’s scan mode now supports selecting content in Microsoft Edge, Word, Outlook, Mail and most text surfaces.

Mobile broadband (LTE) connectivity improvements. Microsoft introduced a new and improved Mobile Broadband USB class driver based on the NetAdapter framework in Windows 10 Insider Preview Build 17655. In this build, that new driver will be enabled by default on systems with mobile broadband connectivity.

There’s more, including some changes, improvements, and fixes, and some known issues, especially for Sets when used with Office. Check out the Microsoft blog post for all the details.