It isn't a new stat, it's resil given to players. All character sheets have "resilience" on live. The only difference now is that without PVP gear on it's 40% instead of 0. There's not really anyway for it to "ignore" baseline resil while still being affected by pvp gear resil.
The problem is it's not SCALING to resil like it does now.
Makes sense.I'm not in beta
Edit: Further testing shows you to be right, I was looking at it as if Blizzard had better programmers but they don't, so atm only necro isn't being affected by baseline resil.