Microsoft is now testing Windows 10 build 16263 for PCs internally. The new Redstone 4 build 16263.1000 (rs_prerelease.170807-1501) was compiled on August 7, 2017. The company also compiled mobile build 10.0.15241.0 on August 7.
The Windows Insider team will not release any new build this week because of a blocking bug in internal testing. The new insider build will roll out next week.
Recently, Microsoft released the Fall Creators Update build 16257.0 and Windows 10 Redstone 4 build 16257.1000 to Fast Ring insiders. The builds were released with new features, bug fixes, and improvements.
Microsoft also released Windows 10 Cumulative update KB4034674(1703), update KB4034658(1607), and KB4034660(1511) on August 8.
Now you can download Windows 10 build 16257 ISO from the link below.