It is now time to work out the details.
I have added an answer below to outline the basic process I think we should follow.
Please add your own thoughts to this discussion and up vote answer(s) you agree with.
You may also answer to cover other things we could or should do during this process, to make the final outcome as positive for the site as possible.
For example, this is the place to make the case for any new tags that you consider worthwhile for the few questions that might have been legitimately tagged sql in the past. As a reminder, we already have query and sql-standard.
This post will be featured for at least 14 days.