So, apparently Origin has an accidental little detail about Battlefield 4's Second Assault DLC. According to this image it looks like Second Assault is due to hit on February 18th 2014. Now, I can't read German, and finding this exact screen on Origin seems to be complicated either by the fact that I don't own Battlefield 4 on my Origin account or EA caught wind of the mistake and hid it.

You think I'm making this up!? No? Oh, well here's a reddit thread in the Battlefield 4 subreddit where you can read a bunch of comments that don't really amount to anything. Just like mine.