I'm not going to actively pursue spoilers but I'm afraid getting unintentionally spoiled will be unavoidable, unless I stop visiting every website I like & get off the internet completely until I see the movie.
Somebody, somewhere is bound to write in big bold letters IT WAS KHAN ALL ALONG, I TOLD YOU SO or WHY DID SPOCK HAVE TO DIE??
And probably in the *title*!
And they won't think it's a spoiler, but it will say something in the title like: SPOILERS: KHAN'S FATE AT THE END
Or SPOILERS: SPOCK'S REPLACEMENT!
There were a *lot* of those every time a Harry Potter movie came out. Stuff like: SPOILER WARNING: THE GUY WHO KILLED DUMBLEDORE!