Where can we see professional discussions about vaccine development of the covid-19?

The New York Times maintains a decent vaccine progress tracker: https://www.nytimes.com/interactive/2020/science/coronavirus-vaccine-tracker.html

I also follow Derek Lowe's In The Pipeline blog: https://blogs.sciencemag.org/pipeline/ (It is not purely coronavirus-focused, but it has a lot of good information, and cites sources that you can go to for even more detail)