Hearthpwn

I am assuming they will take some from paladin and mage and buff shaman.

Nerf predictions:

First Day of School -> 1 mana
Conviction -> 2 attack
Incanter's Flow -> 3 mana
Mankrik, Consumed by Hatred -> 7 health
Crabrider -> 3 health. I hope they would switch South Coast Chieftain or Magicfin in as neutral and make Crabrider shaman as the nerf will hit murloc hard.

Buff predictions:
Mana Tide Totem -> 2 mana OR 5 health
Tidal Surge -> 3 mana
Shattered Rumbler -> If you cast a spell last turn, deal 2 damage to all enemy minions.
Tinyfin's Caravan -> 1 mana
Prospector's Caravan -> 1 mana
Soldier's Caravan -> 1 mana (This change is properly a bit dangerous)
Apothecary's Caravan -> 1 mana
Soothsayer's Caravan -> 1 mana
Dark Inquisitor Xanesh -> 4 mana
Toad of the Wilds -> gain +3 Health

The list is still very much in "work in progress", you can also discover a Lady Vashj from a  Primordial Studies. I would properly try Marshspawn, Speaker Gidra, Lightning Storm, Tidal Surge, Torrent or Ras Frostwhisper, 
Taelan Fordring can draw Ras Frostwhisper if you draw Malygos the Spellweaver early.

I really hope they manage to get Control Warrior out of the abyss. I really like the metas that are a bit slower than it is right now. I feel like most of my games don't even go to 10 mana anymore. I either get faced to death by an insurmountable amount of stats on the board or just explode from a Brann Bronzebeard + Sire Denathrius combo. The powerlevel in HS is crazy high these days.

But the little tweaks that leaked look promising so far, let's see.

I hope we will also see some buffs, not only nerfs since some classess are not existing in this meta. Specially Warrior for example.

I don't know if I'd even call that a nerf for CA, at least not in this Standard meta. Oftentimes I have to hold back on casting it because I have to kill the opponent in the next turn, or they'll have 2 mana and can do Brann/Bolner + KT/Denathrius. Now It can be cast without worrying about that.

Snowfall was hit hard, especially since it no longer works well with Battlecry synergies. I was expecting something more like a mana cost increase. This might honestly put Shaman in the gutter since it was their only good option for dealing with big boards.

Vile Library was barely hit. I hope there are some additional nerfs to Implock or that deck will remain T1, probably even more so now with Snowfall so heavily nerfed.

Stag nerf is fine. I didn't feel like Hunter was that out of line, but I'll never disagree with aggro nerfs.

Edwin is a very weird buff, and a very tiny one. Wonder if there will be more help for Rogue.

Relic buff is very much needed, that deck is atrociously bad.

Also that's quite a significant Blow to Freeze / Control Shaman, not entirely setting it back to Dumpster Tier territory, but definetly dropping out of Tier 1 with one of the primary Win Conditions basically removed from the equation.

Don't you think warrior need to get little bit nerfed too?

Gonna try this one

I tried out the deck and having good luck with it so far