Microsoft is now testing Windows 10 build 16221 for PCs internally. The new Windows 10 Fall Creators Update build 10.0.16221.1000 (rs_prerelease.170609-1632) was compiled on June 9, 2017. Microsoft is also testing Windows Mobile build 15223.0 (feature2.170606-2232).
Last week, Windows Insider team released feature rich Windows 10 Fall Creators Update (Redstone 3) build 16215 to Fast Ring Insider members. The latest Insider Preview build come with a new Start and Action Center with Fluent Design as well as changes for My People, Cortana, Edge and more. Microsoft also released insider mobile build 15222.0.
In addition, Microsoft is expected to release Windows 10 Cumulative update build 10586.962 (Threshold 2), update build 14393.1358 (Anniversary Update) and 15063.400 (Creators Update).
