Microsoft is now testing Windows 10 build 17001 for PCs internally. The new Redstone 4 Update build 17001 (10.0.17001.1000 rs_prerelease.170919-1430) was compiled on September 19, 2017. Previously, Windows 10 Redstone 4 build 17000 was also compiled.
Windows 10 build 16294 is now available for Fast Ring Insider members. The new builds bring multiple fixes and improvements to the OS. Currently, skip ahead users are testing R4 build 16362 and expected to get new build soon.
Recently, the company also released a new set of Windows 10 cumulative updates including OS build 15063.608 for Creator Update users, build 10586.1106 (Threshold 2) and OS build 14393.1715 (Anniversary Update).
You can download the ISO image files for the Windows 10 build 16288 and Redstone 4 build 16362 from the links below.