(Topic titles are clickable links)
Jan 2020 thread to tell people to get ready to switch eventually as the first small groups of users were migrated. This became a very active discussion thread on the changes.
June 24 official thread with more details:
August 2020 thread with official timeline for when features will be removed:
And the following two threads were not official announcements, but are where staff have been tracking reports on the new voice assistant skills:
Other user-created threads on the migration, including community FAQs, can be found at the following tag:
If you are looking for information and discussion on the new platform from a coder‘s point of view, see the developers section of the forum. Just be aware that as of this writing this is still very much a work in progress.