I recently shared details about the retirement of HomeGroup from the Windows 10 April 2018 Update. This feature update was made available for download last week; as of this month’s Patch Tuesday, the update is now beginning its rollout through Windows Update.
Microsoft had given users a heads up about the removal of HomeGroup from this fifth feature update for Windows 10 which is why we knew that was coming.
When they began the availability of the update to the public last week that triggered the publication of the complete list of features that were either removed or planned for removal/replacement in this update.
On the page listing these changes for the feature update there is a caveat from Microsoft which states:
This list is subject to change and might not include every affected feature or functionality