Sprint has posted at least two RDFs since the first of the month that show that they appear to be testing builds with 5.0.1. Here's the latest (best opened with IE):
http://device.sprintpcs.com/Samsung/SM-N910P-SPRINT/OB2.rdf
Not sure if signifies that the supposed delay is over or not.
http://device.sprintpcs.com/Samsung/SM-N910P-SPRINT/OB2.rdf
Not sure if signifies that the supposed delay is over or not.