Jacob Aagaard wrote on 11/10/08 at 09:02:14:
Beat the KID by Jan Markos is out maybe already next week.
Golubev's repertoire book on the KID was great and only 2-3 years old?
We are planning a Nmzo/Aagaard0 GM repertoire book, but not in the near future. Other projects come first.
From the Grandmaster Repertoire 1.d4 - Volume 1 Thread.
This is not confirmed on the Quality Chess website, so it is not impossible that the date has been changed to early 2009.
Or alternatively, you could send Aagaard a PM to inquire about the intended publication date of the book.
Out of the three lines given, the 6.h3 Makogonov Variation looks like the easiest to play, the Bayonet with 9.b4 is probably the most promising and the 9.Ne1 Korchnoi Variation is the most difficult to play, requiring both excellent preparation and very accurate defence.
Aagaard, do you know whether Markos recommends 8.Be3 or 8.Re1 against the 7...Na6 variation? It was covered in Luis Comas Fabrego's book "True Lies in Chess" by Quality Chess, and when I browsed the chapter at a friend's place, he certainly gave a convincing case in favour of the variation. Although the coverage was predominantly the most popular 8.Be3 Ng4 9.Bg5 Qe8 10.de5 variation if I remember correctly).