Looks like there are at least 3 new powders in this "Enduron" series.....4166,4451 & 7977. According to information, they should be on the dealers shelves in early 2015. These 3 feature an additive for copper fouling elimination.
I have worked pretty hard on my loads over the years and have settled on components that give me the performance I want. If I to get a new gun or change bullets, I would surely give them a try. Bet they are at the top end of the price scale.