Microsoft will soon release latest insider build 14931 to fast ring insiders. Meanwhile, Windows insider team is now testing Windows 10 PC build 14933 and mobile build 10.0.14933.1000 internally. The latest internal build is compiled on September 20, 2016.
Recently, Microsoft rolled out build 14926 for fast ring insider members. There are few new features in the latest Redstone 2 build. A new cumulative Update kb3189866 build 14393.187 for PC and Mobile build 10.0.14393.189 for Windows 10 Anniversary Update users is now available.