Just spoke to FlightpowerUSA and the new 4900 3S packs should be in at their facility any day now. So, they should be at shops/retailers within about the next 2 weeks. For any of you looking to buy any of the new Trakpower packs, their website gets updated daily with the last 10 shops that placed orders with them.
http://flightpowerusa.com/index.asp?...ereCanIBuy.asp