Windows 10 Insider Preview 16215 for PC, 15222 for phones
Microsoft releases new Insider preview builds in the Fast Ring
Windows 10 build 16215 brings many new features and improvements to PCs, while build 15222 includes only small fixes and under the hood changes for smartphones.
For Windows 10 PCs, build 16215 brings many Start & Action center improvements, including elements of Fluent Design. The Action Center has been redesigned to provide clearer information separation with Fluent design elements and acrylic font.
Websites can now be pinned to the taskbar directly from the browser’s settings. Another new feature is the full screen mode (F11) in Microsoft Edge.
PC build 16215 also includes many Cortana improvements – camera roll insights, a lasso tool to circle relevant information, and more.
The touch keyboard has been completely redesigned, now looking exactly the same as the keyboard on phones, offering the same features and experiences with predictions, one-handed more, dictation and more.
Windows 10 Mobile build 15222 fixes several minor issues with the keyboard, notifications across devices, and the reliability of notifications from some apps like Fitbit.
You can read the blog post about these two Insider builds here.