The last book of the Starcraft: The Dark Templar Trilogy is titled: TWILIGHT.  It is slated to be on sale by August 28, 2008.  Second part: Shadow Hunters is available on November 28, 2007.

More details of book three will be updated when they become available.  You can read book two’s description here.

STARCRAFT: THE DARK TEMPLAR, book 3: TWILIGHT
* Mass Market Paperback
* Publisher: Pocket Star (August 25, 2008)
* Language: English
* ISBN-10: 0743471296
* ISBN-13: 978-0743471299