http://www.chessbase.com/newsdetail.asp?newsid=7814

I´ve the dvd, so probably Bologan just uses his notes to write a book en passent?! 
When I listened to his dvd, I felt like an master student, who listened to a bachelor lecture. 98 Percent was known, but a few lines/remarks were still useful. 

It´s strange, I´ve Avrukh, Wojo´s weapon, Bologan´s dvd, Marin´s dvd about the catalan, but I can´t assure, that I won´t buy bologan´s book, just to get two percent of extra knowledge. Probably some kind of addiction or passion?!

I have the book.
Respectfully, I disagree with dre.
Bologan is a strong player (usually around 2700), and he has proven a thorough, capable author.
I confess I don't know much about the Catalan, nothing beyond any FM's general knowledge. 
But the book is easy to follow, has clear explanations, looks to have sufficient detail for anyone here (sorry if any 2750+s are reading). 
And 2 years since Avrukh.
I humbly opine that Bologan is usually worth reading.

I found a website (overstock.com) that lists it as being expected to be released in October 2012.

Bill