Update 7/15/2019: As a reminder to customers on Windows 10, version 1809 using Windows Update for Business with a Branch Readiness Level set to Semi-Annual Channel and a default 0-day deferral, your ...
Updated Jul 15, 2019
Version 8.0
Blog Post
Hi Vadim,
We only have 2 releases each year, ( release = new features/functionality/APIs ). We call these the SAC releases, for Semi-Annual Channel.
That is why there never was a "SACT" and "SAC" release. SACT referred to the phase of deployment where we are publishing only to "targeted" devices, versus all, and aligns the common guidance shared between Office and Windows for managing a deployment rollout.
I cover this here:
In that blog, you will also find links to the shared Office and Windows recommended servicing model.
There is only one release date for each SAC. For devices connected to the update service, using WuFB, we begin updating them based on the values the users have configured their devices. We don't have separate release dates, consumer vs other.
For commercial customers that self manage, they get the same release, but determine when and how it will get published to their users via their management tool of choice, SCCM, home grown or other.