Because the PlayStation Store is down, those who own a used copy of Mortal Kombat for PS3 don't have to worry about paying $10 for the "Kombat Pass." Rather than making players wait until the store is back online, Warner Bros. has decided to suspend the pass requirement until the PlayStation Store returns - which is rumored to take place on May 24.
Like used game owners, new players won't have to worry about redeeming the code that comes with the game until the PS Store is online again.
In other words, a free weekend of online play. And if you hate the online play, and you bought the game used, this weekend could save you a cool $10. All in all a win-win.