They're all up now, I believe. Some VERY interesting options.
In response to your thoughts on Priest pvp talents:
Shadow
Void Shield = Good for solo pvp. The conversion ratio is kind of weak. I don't see this having a place in either Arena or competitive BGs.
Mind Trauma = max DPS option. Also has the cool effect of sapping some DPS from enemies, but that's mainly applicable in Arenas / pug BGs. I don't know how many high DPS casters you can afford to just mind flay in competitive BGs.
Void Shift = insane. This is the talent that other talents have to prove themselves against. It is absolutely unbelievable that level 20 characters get access to it. Best in slot choice, outside of fringe scenarios in any pvp environment.
Psyfiend = probably underrated. I think it's very good for arena. It has the totem problem of being immediately killed if players are coordinated. But it's a handy tool in a lot of scenarios.
Holy
Holy Ward = Powerhouse. It's competing with a lot of other powerhouse pvp talents, but all of the CC negation pvp talents across all specs will have a home in some place at some time.
Holy Word: Concentration = same as Holy Ward, except with different niches. I can see this being an incredible resource in competitive BGs. But compared to some of the other options, it is, like Holy Ward, very situation dependent.
Greater Heal = I can't think of a situation where this is that useful. It's basically Serenity with a cast time, I guess? I haven't had much experience with the "max health" type of spells, but I assume this gets reduced by anti-healing. Even if it doesn't, this is just so easy to interact with as an enemy player.
Miracle Worker = unparalleled in Arena, insane in every other environment. It runs into a bit of the "Abundance" paradox with Swiftmend (although Abundance was still the best option). 2 is better than 1, but 1 is MUCH better than 0. Still, pick this.
Ray of Hope = the main competitor with Miracle Worker. I think it's probably better in competitive, just because of the coordination with other healers. It's comp dependent. In Arenas, it doesn't seem to do anything that a 2nd charge of Serenity wouldn't as well.
Discipline
Purification = Cool talent, but I can't think of where you would specifically want this over the other options.
Purified Resolve = Cool talent, but I can't thi... yeah, same thing. It's hard to imagine when this would ever lead to better healing numbers than some of the other options.
Trinity = this one is kind of complicated and comes with a lot of moving parts. I'm inclined to say it's decent because it gives a more well-rounded effect than the other options, but at the cost of actually being impactful in any area.
Strength of Soul = I can maybe see taking this in an Arena where you know the enemy team is very physical damage reliant. I'm still skeptical that the "while the shield persists" duration is enough of a reason to pick this over another option.
Archangel = do you need to keep teammates alive? Pick this one. Insane in every pvp environment.
Darkangel :^) = Do you need to kill people with your team? Pick this one. Dear god this is unbelievably powerful in competitive BGs.
Searing Light = Offensive option. I guess pick this one in solo BGs where you want to go full aggro. Or in duels. Otherwise, I don't think the reduction on Penance's cooldown justifies this as anything other than a pure aggro choice.