Hearthpwn

Also, do you think, that the current Tier1 decks, e. g. Control/Cube Warlock, or Aggro Paladin, will stay on top, until the next expansion?

The meta has settled in and Razakus Priest is still on the top of the list. From here on out you'll see the same tier 1 deck with tweaks, but nothing will come to contention. It'll take a huge round of nerfs to see any real movement. Blizzard effectively made it so that Priest has all the answers to aggro now on top of being able to play all the broken tempo cards too.

Edit: Would like to say, the rest of the decks ie. Aggro/Murloc Pally, Control/Cube Warlock and Tempo Rogue will also be strong but there is more likely a power war between those decks fighting for the #2 spot effectively.

Probably but it's still early days. Give it a week or so more and everything should be set!

Quote from KawsmikW >>

The meta has settled in and Razakus Priest is still on the top of the list. From here on out you'll see the same tier 1 deck with tweaks, but nothing will come to contention. It'll take a huge round of nerfs to see any real movement. Blizzard effectively made it so that Priest has all the answers to aggro now on top of being able to play all the broken tempo cards too.

Yes? 

At Legend my last 35 games were; 8 Razakus, 6 Big Priest, 10 Smorc Paladin, 6 Cubelock, 5 Tempo Rogue.

Seriously.

There's no point playing anything else. Those Decks are just so far above the next tier it's crazy. 

Well, at rank 8 it's either aggro Paladin, smorc Mage, smorc Hunter or aggro Druid, so yeah, the meta is back to its old stinking aggro self.