Definitely not a spoiler, since it's announced openly in the TrekToday headlines immediately to the right of this thread.
And it's an intriguing choice. I rather liked the Cornetto Trilogy (that Pegg cowrote with Edgar Wright), and
The World's End was an effective science fiction movie in its own right as well as a comedy. Hmm... not so long ago, a lot of people were hoping Wright would get the director's gig. Pegg getting the writer's gig is in the same ballpark, at least.
And it's in the grand tradition of Trek films' cast members moving behind the camera later on -- usually to the director's chair (with Nimoy, Shatner, and Frakes), though a few did have story co-writing credits (Nimoy on TVH, Shatner on TFF, Spiner on NEM).
Well, now I can believe it. So he does have a connection to Bad Robot that wasn't readily known. Makes sense.
What do you mean? Pegg has a well-known connection to them -- he's been a cast member in four Bad Robot-produced films by now, two
Mission: Impossible and two
Star Trek. But I don't see the significance, since any production company can hire writers that aren't part of the company. The person co-writing the script with Pegg has no prior Bad Robot connections.