Microsoft is now testing Windows 10 build 16279 for PCs. The new Fall Creators Update build 16279.1000 (rs_prerelease.170826-1115) was compiled on August 26, 2017.
The company may release Windows 10 build 16280 or build 16281 for Fast Ring members on this Friday.
Recently, Microsoft released the Fall Creators Update build 16278 to Fast Ring insiders with bug fixes and improvements.
Now you can download Windows 10 build 16278 ISO from the link below.