As 8of5 reports on thetrekcollective.com
Amazon has added a couple of new Star TRek books for 2014 to their catalog (FWIW they are also mentioned under author updates on the respective authors' S&S pages with the links leading to an error message):
February: Voyager:Protectors by Kirsten Beyer
March: TOS: No Time like the Past by Greg Cox
April: Enterprise - Rise of the Federation: Tower of Babel by Christopher L. Bennett
May: TOS: Serpents in the Garden by Jeff Mariotte
Also finally listed on Amazon is Michel A. Martin's eBook exclusive TOS novella Seasons of Light and Darkness, with a release date of April 28th 2014, which is almost a year later than the June/July 2013 date Martin originally mentioned.