Windows 10 Release and Servicing Changing

Changes to the Windows 10 release and servicing model in Apr. 2017 may make releases more predictable. This illustration shows anticipated release and retirement dates for Windows 10 client OS versions for enterprises, under both the existing servicing model (branches) and a new servicing model (channels). The transition to the new model will start in Sept. 2017.

Under the original servicing model, most enterprise computers receive new Windows 10 features and support as one of two branches: Current Branch for Business (CBB) and Long-Term Servicing Branch (LTSB). The CBB delivered features in new versions two to three times a year and offered security updates for the two most recent versions, which meant that a version was eligible for security updates for roughly 12 months. However, this support period was often extended by up to an additional 60 days. The LTSB delivered features in new versions annually or less frequently, and each version was eligible for security updates for a minimum of 10 years.