There was a post on here either last week or the week before stating that a place in Douglasville had gotten two kegs. However, two kegs around these parts last about a weekend. If you keep your eye open for beer events at the local beer bars (Union Jacks in Boyertown, Craft ale house in Royersford, possibly the new Liberty Taproom in Exeter eventually), they tend to get a keg of it and tap it for the day of the event. However, last time I was at Union Jacks they were having a hop festival the following day. they had two kegs of Pliney for the event which started at, I believe, 10am. The people working there told us if we wanted to taste it, be there by 7am to get in line as both kegs would probably be kicked by noon. Not sure if it happened, couldn't get back down. I am on the quest to find it as well (obviously!) even though I have been told by MANY that there are better IPA's out there that are easier to get (Blind Pig). good luck on your quest and if you find it, shoot me a PM!
tom