Microsoft is now internal working on Windows 10 PC build 14929 and mobile build 10.0.14929.1000. The latest internal build is compiled on September 14, 2016.
Microsoft is now rolling out build 14926 for fast ring insider members. There are few new features in the latest Redstone 2 build. The company also released Mobile build 10.0.14926 which unfortunately bring some issues for insiders.