The new software version is L710VPUCND8 and Sprint says that it will be sent out in stages. That means that if you haven't received the update by this morning, don't fret. It will come. Also, to save your precious data allowance, you should be on a Wi-Fi connection when you download and install the update. And, you should have your battery charged to at least 50%.
If you're a Sprint customer with the Samsung Galaxy S III, be on the look out for this OTA update. Or, you can try to coax it out of your device by going to Settings > System Update > Update Samsung Software and Check for Software Updates.