Here a quote from the author, Alan Gratz of the Starfleet Academy Novel:
The Assassination Game “I knew the Original Series versions of these characters very well, of course. I owned a copy of Star Trek XI too, and I watched it a few times in succession before working on this novel to get the new characterizations down. That said, I wanted to pull in as much of TOS and its characterizations as I could. (..) As to the new movie, I was particularly intrigued by the relationship between Spock and Uhura, so I explored that more in my book. I also got to introduce Sulu to the book series! I was pretty stoked about that, as Sulu is one of my favorite characters from TOS. In every case, I tried to imagine I really was writing for the same old characters in a new, alternate timeline: how would the events of Star Trek XI have changed them from what we already knew? And in what ways would they still be the same? It was a fun challenge."
Source:
http://8of5.blogspot.it/2012/06/alan-gratz-on-assassination-game.html (this was posted on the spockuhura appreciation tumblr at
http://spockuhuralove.tumblr.com. If you're not a member of tumblr but would like to see the posts, you can do so on your live journal at
tumblr_sulove)