With yesterday's release of Windows 10 build 14931, which is the first Redstone 2 build to make it to the Slow ring, also come with it some known issues that you should check out before upgrading.
Build 14931 RSS
Coinciding with its release of build 14931 to the Slow ring today, Microsoft has also released ISOs of that build - the first ISOs to be made available since those of the Anniversary Update in August.
Microsoft's rollout of Windows 10 Insider Preview build 14931 to Slow ring PCs today marks the first time that a Redstone 2 build has been made available outside of the Fast ring.
Build 14391 is now rolling out to PCs in the Fast ring, but Microsoft says it won't release a new Windows 10 Mobile Redstone 2 preview until it fixes two serious issues that arose with build 14926.
Microsoft today released Windows 10 build 14931 to the Fast ring for PCs. There wasn't much in terms of new features, but as usual, there is a long list of fixes, improvements, and known issues.
Microsoft today released a new build from the Development Branch to the Fast ring, bringing the build number for PCs to 14931. As usual, the build is light on new features.