As far as I know, the only ones with a clue are the Devs, and they aren't talking. That said, I highly doubt it. From the Test Forum, it looks like they are still reviewing feedback regarding some systems. which mean they may or may not update the build to reflect that feedback (again only the devs know if they will act on it or not). So I am thinking, it is a while yet before it hits live.
Uh getting rid of Immunities in my opinion for the most part was perhaps one of the best things that has happened to recent PvP because it made support roles too powerful. And a lot of people asked for them to go away.