Windows Servicing simplified

No more terms Current Branch and Current Branch for Business.  Now just two channels, Semi-Annual Channel and Long-Term Servicing Channel. See below and link with further explanation. With Semi-Annual Channel, the goal is 2 releases both targeted March and September. Instead of waiting for CBB like you may have before, the idea now is to get the latest Semi-Annual Channel, go through internal validation and start to deploy once testing proves success.

• Semi-Annual Channel. These are the twice-per-year feature update releases, targeting March and September, designed for the broad population of general-purpose PCs used throughout organizations. Each of these releases will be serviced for 18 months from the date of release. (The Semi-Annual Channel replaces the Current Branch [CB] and Current Branch for Business [CBB] concepts.)
• Long-Term Servicing Channel. These are less frequent releases, expected every 2-3 years (with the next one expected in 2019), designed for special-purpose PCs such as those used in point-of-sale systems or controlling factory or medical equipment. Each of these releases will be serviced for 10 years from the date of release. (The Long-Term Servicing Channel replaces the Long-Term Servicing Branch [LTSB].)

https://blogs.technet.microsoft.com/windowsitpro/2017/07/27/waas-simplified-and-aligned/