Microsoft Windows insider team is now testing Windows 10 PC build 14934 and mobile build 10.0.14934.1000 internally. The latest internal build is compiled on September 21, 2016. The company is also testing cumulative update build 10586.596 for Windows 10 1511 Threshold 2 PC and Mobile users.
Recently, Microsoft rolled out build 14931 for fast ring insider members. 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.