Microsoft has released a new Windows 10 Insider Preview Build 18242 (19H1) to Windows Insiders as well an updated Windows 10 SDK Preview Build:

Windows 10 Insider Preview Build 18242
Windows 10 SDK Preview Build 17758 available now!

Windows 10 Insider Preview Build 18242

General changes, improvements, and fixes for PC
We fixed an issue resulting in the background of notifications and the Action Center losing color and becoming transparent in the last two flights.
We fixed an issue where thumbnails and icons might not be rendered if there were any video files saved to the desktop.
We fixed an issue resulting in the back button in Settings and other apps becoming white text on a white background if you hovered over it.
We fixed an issue resulting in certain apps crashing when you tried to save a file from the app.
We fixed an issue resulting in nearby sharing not working for local accounts where the account name contained certain Chinese, Japanese, or Korean characters.
We fixed an issue resulting in rendering issues in certain types of PDFs in Microsoft Edge.
The Emoji Panel is now draggable if you would like to move it to a different position.
We fixed an issue resulting in Narrator not reading selected word choices when typing using an IME (for example, in Japanese).
Some Insiders who have opted in to Skip Ahead may notice differences when using the Japanese IME in today’s build. We’re trying something out and will have more details about it later. If you have any feedback about your experience when using the IME, please let us know via Feedback Hub.
We fixed an issue where certain Bluetooth audio devices wouldn’t play sound in apps that also used the microphone.
We fixed an issue resulting in slower resume from hibernation on certain devices in the last few flights.
We fixed an issue resulting in Windows Hello spending more time in the “Getting Ready” state in recent builds.
We fixed an issue resulting in an unexpectedly increased use of battery recently when using certain apps like OneNote.
We fixed an issue in PowerShell where it wasn’t displaying characters correctly in Japanese.

Read full article @ Windows Team Blog

Windows 10 SDK Preview Build 17758 available now!

Today, we released a new Windows 10 Preview Build of the SDK to be used in conjunction with Windows 10 Insider Preview (Build 17758 or greater). The Preview SDK Build 17758 contains bug fixes and under development changes to the API surface area. The Preview SDK can be downloaded from the developer section on Windows Insider.

Read full article @ Windows Team Blog