0% -- unless they have some sort of YG redemption program. According to their Facebook, 2012-13 UD1 is an eligible product for their Expo Priority Signings redemption program. That would mean insert the cards ASAP after the first game, do the print runs, package, and ship to Distributers all within a week. Snow ball's chance.
On that note, I think YG redemptions would create a bigger headache in the event we lose the entire season. How would they choose which rookies next season to back fill the 2012-13 redemptions, unless they stick with the Draft Year. I see a return to the 2004-05 YG content (veterans, oddities, ...)