Microsoft is rolling out both a Redstone 4 and Redstone 5 build for Insiders in the Fast and Skip Ahead rings.
Microsoft has today released two new builds for Insiders in the Fast ring and Skip Ahead rings today. This is a significant release, as it marks the final development stages of Redstone 4 as well as the first development stages of Redstone 5. Insiders in the Fast ring are receiving build 17101 from the RS4_RELEASE branch, whereas Skip Ahead users are receiving 17604 from the rs_prerelease branch, a Redstone 5 build.
Right now, both builds are more or less identical since development has only just been forked. Here's what's new:
Full story from the WindowsCentral blog...