I don't know if I have the energy in me. The Rust Project burned me out and continues to burn me out. Writing a book is a tremendous amount of work, and I am focused on my job over more broad open source contribution.
That said, I appreciate the kind words. But I am struggling to have the energy to accept conference invitations and do smaller open source work, so I wouldn't commit to anything like that any time soon. (that said I literally arrived in Raleigh for All Things Open earlier today, where my talk will actually be about async/await, so... never say never.)