Due out in 2016 for Star Trek’s 50th anniversary, would-be-first-time director (and multiple time screenwriter) Robert Orci is apparently off the project. In his own words: “Yeah guys, it’s true, I was blown out because the studio said the script sucked.”
There you have it.
With regard to the leaked plot summery: “No time travel was ever considered, fyi.” Of course, this is the same guy that insisted there was no Khan in Star Trek Into Darkness, so take it with a grain of salt.
He also stated that this does not jeopardize the 2016 release date. I imagine Paramount/CBS is counting on this film to be the centerpiece of a year-long Star Trek nostalgia-fest.