Sending heartfelt condolences to Bram's family. His last commit is just one month ago: https://github.com/vim/vim/commit/4c0089d696b8d1d5dc40568f25.... I wonder who else has access to vim.org and the official git repository and if there will be anyone step up to become vim's BDFL.
Judging by that the announcement email came from his own email, I'm guessing there has been some sort of redundancy setup done when the medical condition was initially detected.
Neovim has a bit of a different mentality compared to Vim; it's not the same project.
I don't really want to discus this in detail here as it's not the right location, but I think lots of people would be interested in continuing Vim, rather than having Vim being subsumed by Neovim. We'll have to see how things and the relationship between Vim and Neovim change and evolve in the coming weeks and months.
I assume there are multiple people willing and able to continue vim development and I think it might be important for that to happen. I just thought it was relevant in the context of that comment to mention the other project.