Louisville has been announced (2021). Sacramento is all but announced (2020, supposedly). Atlanta is rumored. Supposedly (if we're to believe commissioner-speak, always a proposition fraught with peril), there's two waiting for 2022 as well.
Many people have been expecting LAFC to start a women's side, but ever since Barcelona backed off, it seems everyone else did, too. Thing is, if there's a problem I can see with that... having 30-some owners means barely being able to agree on lunch, never mind "second team" decisions.