What is Redstone? It’s the next big update to Windows 10 slated for release in summer of 2016. Redstone Wave 2 is expected in 2017.
Windows 10 is getting an Anniversary Update in summer of 2016 that introduces a number of new features and enhancements over the current November Update released in late 2015. Up until now, this update was codenamed Redstone 1 and is the first of two major updates coming under the Redstone wave.