44 vacs now in testing:
https://www.raps.org/news-and-articles/news-articles/2020/3/covid-19-vaccine-tracker
I suspect by November 1st there will be significant news regarding the efficacy of many of these. They won’t be greenlighted for general use but I wouldn’t be surprised if one gets emergency use application.
I still think that optimistic. That's less than 60 days away.