RedStone (ref to Minecraft) is the codename of the next upgrade to Windows 10 which is to be released somewhere around March 2016
If you’re on the fast Insider ring and you check for updates you should get this
event though the build number has jumped from 10586 to 11082, no big list of interface-changes for now, as explained here by Gabe Aul on December 16th
Today we are releasing Windows 10 Insider Preview Build 11082 to Windows Insiders in the Fast ring.
This includes the changes that have also been going out as cumulative updates through Windows Update on your PCs running the Windows 10 November Update as well as on phones running Windows 10 too. We’re also working on some structural improvements to OneCore, which is the shared core of Windows across devices. Essentially, OneCore is the heart of Windows, and these improvements to OneCore make building Windows across PC, tablet, phone, IoT, Hololens and Xbox more efficient. We’re doing some code refactoring and other engineering work to make sure OneCore is optimally structured for teams to start checking in new features and improvements in the new year.
Upgraded all my machines here, it’s running smooth only bug I found so far is the fingerprint feature in Hello that broke.