Microsoft has released Insider Preview Build 16170 to PC insiders on the fast ring. New builds won’t have any big changes or features added for the near future. Microsoft is focusing on adding refinements to OneCore, which is the base Windows build that all other OS versions are based on. Microsoft also announced that they have officially launched the Windows Insider Program for Business. This program allows businesses to be part of the Insider program using their business credentials rather than personal Microsoft accounts. This new program can be found here.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-insider-build-16170-released-and-windows-insider-for-business-launched/