2016-2020 Metro-to-Metro Migration Inflow

I searched the DUG before asking this question and I apologize in advance if this question has already been asked. Does anyone know when the 2016-2020 Metro-to-Metro Migration Inflow will be available.  Here's the link to the page I am referring to https://www.census.gov/topics/population/migration/guidance/metro-to-metro-migration-flows.html

Thanks in advance.

Robin