The AOS Committee on Classification and Nomenclature of North and Middle American Birds has posted its comments on the 2019 proposals, and also has posted the first set of proposals for 2020.
http://checklist.aou.org/nacc/proposals/2019.html http://checklist.aou.org/nacc/proposals/2020.html
We encourage submission of proposals to the committee by non-members. Submissions should follow these guidelines: https://americanornithology.org/nacc/guidelines-for-submitting-a-proposal
A new Guidelines for English Bird Names has also been posted: https://americanornithology.org/nacc/guidel