Microsoft is releasing Windows 10 Insider Preview Build 17666 (RS5) to Windows Insiders in the Fast ring and brings a wave of Sets improvements.

In today's build you'll find that Sets now have an acrylic title bar. Microsoft is also adjusting the window border so that it's now grey.

• Recent Microsoft Edge tabs now show in Alt + Tab: if you use Alt + Tab to quickly switch back and forth between apps, all of your recent Microsoft Edge tabs will now be included, not just the active one.
• Should apps and websites open in a new window or a new tab? The Sets section of Multitasking Settings now lets you set your windowing preference.
• You will also be able to mute one of your web tabs. When a webpage in Sets starts playing audio, you'll now see a volume icon on the tab.
• Tabs will now restore with better performance - they'll open in the background and use no resources until you go to the tab.

Microsoft has also made other fixes, changes, and improvements to Sets, including:

• Task Manager has now been added by default to the list of apps where not to enable Sets.
• Fixed an issue where right clicking a tab in the Sets title bar didn't bring up a context menu.
• Fixed an issue where if Microsoft Edge wasn't already open, clicking the plus button in Sets would open all of your default websites along with the new tab page.

New clipboard experience

What do you do if you need to copy the same few things again and again? How do you copy content across your devices? Microsoft is addressing that and taking the clipboard to the next level - simply press WIN+V and you'll be presented with our brand-new clipboard experience!

Dark theme comes to File Explorer

Microsoft added dark theme support to Windows. This setting is available under Settings > Personalization > Colors, and if you switch it any apps and system UI that support it will follow suit. Now Microsoft brings this feature to File Explorer.

Extended line endings support for Notepad

Announced at Microsoft Build 2018, in addition to Windows line endings (CRLF), with today's build Notepad now supports Unix/Linux line endings (LF) and Macintosh line endings (CR).

To use highlight any words or phrase in Notepad and you can search Bing using the following methods:

Right click on the selected text and choose "Search with Bing" via the right-click (context) menu.
Edit menu ->"Search with Bing"
CTRL + B.

Search Previews

Microsoft has expanded previews to support apps, documents, and more. Search previews are here to help you:

• Get back to what you were doing, such as a recent Word doc or Remote Desktop session
• Jump-start your task, be it a new Outlook meeting, a quick comment in OneNote, or changing a setting
• Disambiguate between files by seeing more info including file location, last modified, or author
• Access quick answers from the web like "are bananas good for you?"

Start tile folder naming

Microsoft is adding the ability to name your tile folders. To create a tile folder in Start, just drag one tile on top of another for a second then release. Continue dropping as many tiles into the folder as you'd like. When you expand the folder, you'll see a new option to name it. The name will be visible when the folder is medium, wide, or large-sized.

Your phone and computer have made a new connection

Announced during this week's Build keynotes, a new way to connect your phone to your PC with Windows 10 enables instant access to text messages, photos, and notifications. Imagine being able to quickly drag and drop your phone's photos into a document on your PC in one swift movement - without having to take your phone out of your pocket. Today, this experience allows you to link your phone to your PC. Surf the web on your phone, then send the webpage instantly to your PC to pick up where you left off to continue what you're doing - read, watch, or browse with all the benefits of a bigger screen. With a linked phone, continuing on your PC is one share away.