Don't hold your breath on it shipping early, or at least don't bother asking Sprint online about it. My response was a link to the preorder site, others below were told Sprint has no inventory, they'll get it on the 17th and it'll be 2-5 days after shipping time after that (facepalm)
http://forums.androidcentral.com/samsung-galaxy-note-4/447928-note-4-sprint-shipping-status-2.html