Book IV is now up for pre-orders, and will be out a week from today. Now we are getting a few more details on the next and final book of the series, Endtimes Achaon. This places his the books release on March, which is timely if we are looking Necrons at the end of January and possibly Harlequins in February.
Please remember that these are rumors.
via Steve the Warboss on Faeit 212
-5th and last Book in March
-Title is Endtimes: Achaon
-More Chaos content, focus on Khorne