Related to this, in case anyone is wondering if Cryptography II course by Dan Boneh will ever be offered on Coursera (It's been listed forever but without a start date). He mentioned that it will but most likely after this book is finished.
I think people are hoping for Cryptography II to be more Terminator 2 than Duke Nukem Forever in terms of sequels.
I loved Crypto 1, and was one of the small % that finished it and did all the extra credit on its first run in ... 2012 IIRC.
Been looking forward to part 2 ever since but I will admit having given up waiting!
It's been invaluable.