It's the latest for the RC8T kit. If you look in the XT8 thread in this forum, there's a new 5 piece mount that will be coming out. From what I understand, you can still buy the 5 piece mount separate at a later time if you want. It will be easier to use and have a much firmer mounting face, not that the current edition has those problems at all.
I just bought another 4100mah EP pack from Neu....in 3s flavor