Origin is allowing people to play BF4 on the PC free for 1 week.
I got the information from Battlelog here. I don't know if everyone will be able to view the information so it follows.
http://battlelog.battlefield.com/bf4/news/view/bf4-game-time-for-pc/
Origin is also discounting the game significantly if you decide you wanted to purchase it.
If nothing else it's a chance for those of you who have a decent PC to see why those of us who play the game are so pissed off at the total lack of quality
Origin has just unveiled that the next title as part of their “Game Time” program is Battlefield 4! Starting today, gamers can download Battlefield 4 for free on PC (until August 14th at 10 AM PT). There’s never been a better time for new recruits to jump in and join us on the Battlefield.
Here’s how Game Time works. Players can start downloading Battlefield 4 to their Origin Game Library starting today. From there, it’s up to them to decide when they want to start their “Game Time” clock – today, next week, next month, next year, whenever. From the minute you launch the game, your “Game Time” clock turns on, giving you full access to the game for one week — 168 hours.