The article explaining the books being set aside is here:
Anthony Pascale reported:
Apparently the four novels have mostly been written, but the decision does not appear to have anything to do with the books specifically, but the view that (for now) the team behind the movie should be the ones telling new stories for this new crew, especially stories set after the movie. That does not mean that stories cannot be told in the new movie universe. Comic Book publisher IDW has already released the "Star Trek Nero" comic series, which was primarily a new story set in the new movie universe, but it took place during the film (in the years between Nero’s arrival and when he captured Spock Prime). IDW are also kicking off a six-issue Star Trek movie adaptation next month. And of course last year IDW had a big success with "Star Trek Countdown". A big difference between the IDW Star Trek tie-ins and the planned Pocket Books novels is that IDW has been working closely with the Star Trek writing team of Roberto Orci and Alex Kurtzman. The writing team did work with Pocket and author Alan Dean Foster on the 2009 Star Trek movie adaptation, which became a New York Times bestseller, the first for Star Trek in a long time.
A spokesperson for Simon & Schuster’s Pocket Books provided TrekMovie with the following statement explaining why the books were pulled:
With last summer’s blockbuster STAR TREK movie, JJ Abrams created a new vibrant, layered version of the Star Trek universe. After careful consideration, we decided to hold off on telling new stories while JJ and his team continue to develop his vision.