http://www.pcgamer.com/star-wars-battlefront-season-pass-is-currently-free-on-origin/

Star Wars Battlefront has been out for a couple of years now, but if you haven't got around to picking up the season pass yet, now is the time—because right now, it is free on Origin. 

The season pass normally goes for $20 (or thereabouts) but is currently part of Origin's On the House program, meaning that it's yours if you want it at the low price of zero. Obviously you'll need to own Star Wars Battlefront to play it, but EA will give it to you, along with a notice that you won't be able to actually do anything with it, even if you don't.