It looks like Apple isn’t the only vendor suffering from a supply shortage this holiday season. According to WPCentral, the inventory of the ATT Nokia Lumia 1520 is much smaller than expected, and many customers who had previously been assured that their orders would arrive on Friday are now receiving emails that say the Lumia 1520 is now experiencing shipping delays. WPCentral called several ATT and Microsoft Stores to gauge whether this problem was more widespread than its readers who first reported the delays, and found many locations had only acquired a few 1520s for launch.