It doesn't seem to have been mentioned here yet that Faber's latest post from a few days ago uses a new hashtag #biovival, and he's even gone back and added it to some older #14B2020 posts. There's also the term "Biological chronicle of survival", so it looks like the project now has a more specific name than "B" (though it might still not be the final title).
https://www.instagram.com/p/B_dYcfFJ1EK/ 