It looks like there’s a new The Cicadas of Thailand book out (or coming out soon).
WL Order Code 22 645
Boulard, Michel; The Cicadas of Thailand, Vol.2. Taxonomy and Sonic Ethology
White Lotus Press
Looks like it will be for sale here.
There is a nice, positive review of this book in the latest edition of Antenna, the Bulletin of the Royal Entomological Society (UK).