Playing 1.e4 - Sicilian Main Lines
From the publisher's blog:
"We really really really wanted this to be a single-volume companion to the first book. But physically it cannot be done. We currently have 1000+ Word pages to typeset. We know from experience that anything over 600 pages is way too big as a book. And with our recent decision to upgrade to 90 gram paper, this only becomes even more of a problem."
"We have therefore made the decision to split the book and will end up with two books:
Playing 1.e4 - French Defence and Sicilian Sidelines
Playing 1.e4 - Sicilian Main Lines"
"Both books will be more than 400 printed pages. The splitting makes it possible for us to keep our standard 10.5 font size, to include variation indexes at the back of the book and in all other ways make no compromises on quality no need to delete material that really should be in the book."
"Nothing about this split pleases us, except that the book will be done. And we have a publication date: 23rd May 2018."