I am incredibly confused why 1803 was designated "Semi-Annual Channel" prior to being "Semi-Annual Channel (Targeted)": https://www.microsoft.com/en-us/itpro/windows-10/release-information In your own post you say:
"We recommend that you test the newest features and functionality now—with a targeted deployment"
If you want us testing in a targeted deployment, shouldn't 1803 have been designated "Semi-Annual Channel (Targeted)" instead? Correct me if I'm wrong, but isn't this how the servicing channels are supposed to work?:
SAC Targeted (formerly current branch): Ready for targeted deployment, consumer ready
SAC (formerly current branch for business): Ready for broad deployment and "business ready"
Can you clarify? I was under the impression that Semi-Annual channel gave us ~4 months to test new Feature Updates, but your post implies that we only have "weeks" to get ready for it. "...in preparation for broad deployment to the devices in your organization in the weeks to come..."