Zoe Saldana, who plays Lt. Uhura in the new Star Trek film was quoted at Comi-con as saying that a script for the Star Trek sequel is well underway:
"I do know that they are germinating a script. That's what they told us a month and a half ago, which actually means...in that kind of talk it means that they're probably halfway done with a script."
Its just speculation here, but if the script gets finished in time and what Saldana says is right, JJ Abrams and company could start photography next year. Which means there is a chance that the film could be released in 2011. And if Paramount wants to really cash in on this, they will probably shoot for a Summer 2011 release date.
And with the sequels to both Batman and Pirates of the Caribbean slotted for Summer 2011, this could be a very big summer for the box office.
Nothing's official yet, so stay tuned.