When Sony and Box came together last year to offer Xperia owners a tantalizing deal of 50GB of free storage for life, the promotion was only set to run for a year. Now that shopping season is upon us once more, however, the holiday spirit must've moved them to extend the partnership for yet another year -- that, or Sony needs any edge it can to move those Xperia devices to consumer hands. Just as with the prior promo, Xperia and Sony tablet users can snag 50 gigs of cloud storage completely gratis just by signing up or tapping into existing Box accounts on their devices before December 31st 2013. However, do note that the offer doesn't extend to the Xperia X10 mini, the X10 mini pro and anything that has firmware older than Android 2.1. Now that Sony has this going for two years straight, maybe they should extend this to a lifetime scenario, or as long as Box sticks around to offer up that sweet storage in the sky.