This is cooler if you've read the books
The second half of season one of Spartan Ops picks back up on January 21, and will go on until February 24. Are you excited? Probably not. Halo 4's main story was wonderful, but the Spartan Ops stuff felt pretty hollow by the end of the first season.
That said, I've been hearing some good things about season two from some folks that recently got to see a preview of things to come. Good or bad, at least we're not paying for this extra content. Oh, and January 21 is also the same day that community playlists will finally be cycled into multiplayer. Yay!