Another Godzilla book is coming as we officially get to his 60th Anniversary, Common Sense of Godzilla/Common Knowledge Of Godzilla (depending on the translation) it was release in Japan on 7/2/14.

It's 196 pages cover Godzilla as well as other Toho monsters even including Legendary's Godzilla. Cost is a quite reasonable $6 US. 

It is published by Futabasha Publishers Ltd and you can purchase it through Amazon Japan here.