If you missed it the first time, EA PC portal Origin is offering a week's worth of free Battlefield 4 game time once more. EA didn't say how long this second-time-around offer will be available for, just as the publisher didn't for Titanfall back in August. For the record, you can still test-drive Respawn's mechs for 48 hours - the offer's not gone away - so read into that what you will. If you claimed your Game Time the first go around, sorry, there are no do-overs.
As before, your 7 days or 168 hours or 10,080 minutes or 604,800 sec... sorry, got a bit carried away there. So, your week of Battlefielding won't start until the moment you launch the game. Just remember, it's not a week of in-game time, but of real-world time. So once you start the game, 7 days later or 168 hours later or... Let's just end this here by noting EA's extra incentive is double XP between November 6-10 for everybody, including Game Time newbies. Also, your XP and all your other progress carries over into the full game if you choose to buy it.