Sue Rostoni announced on the Starwars.com boards that the title for the second Fate of the Jedi novel, to be penned by Christie Golden, is now Omen as opposed to the previous title of Enigma.
See the quote below: "Note that I made an edit on the list on the blog--today we all decided that the title OMEN fits FoTJ #2 much better than ENIGMA, so we changed it. This probably won't be the first change in the line-up of all the books -- you'll get to witness the evolution as it happens."
UPDATE: According to ClubJade.net, the Random House online catalog has listed "SW Fate of the Jedi 2" for a June 23, 2009 release. As CJ correctly points out, it may be a bit early to take the page count to heart.