Windows Insiders can now 'skip ahead' to Windows 10 Redstone 4
Windows 10 Fall Creators Update (aka Redstone 3) is nearly done. Microsoft is just working to kill all the bugs and stabilize the release now.
It won’t begin the official rollout for a while -- and if the speed of the Creators Update rollout is anything to go by you likely won’t get it for months anyway -- but the software giant is already looking to the future, and Redstone 4. Insiders who want to remain on the cutting edge at all times will be given the chance to 'skip ahead' and start receiving builds from that future branch if they wish.