Hearthpwn

The current viable meta decks on ladder: 

pirate warrior
renolock D
water rogue
aggro shaman D
dragon priest D
dragon warrior D
jade midr shaman
reno mage D
zoolock W
anyfin paladin D
control warrior
freeze mage D
jade druid
maly druid D
ramp druid
reno priest D
tempo mage D
control shaman D
evolve shaman
jade rogue
midrange hunter W
secret hunter
egg druid D
dragon paladin D
hand-buff paladin

(according to http://hearthstone.metabomb.net/game-guides/hearthstone-deck-tier-list-gz-01-03-2017)

D stands for "Dead" (if it doesn't get new cards for replacements in the new expansion)

W for "Weakened"

These card rotations impact the decks listed above:
(the "?" means that the card doesn't have a big impact on the current meta, but is still mentionable)

druid:Living Roots ,beast cards, Aviana ,Raven Idol ,Mounted Raptor
hunter: Quick Shot,King's Elekk,Bear Trap
mage: Flamewaker,Arcane Blast,Forgotten Torch,Ice Lance
paladin:Solemn Vigil,Murloc Knight?,Keeper of Uldaman,Anyfin Can Happen
priest:Resurrect?,Confessor Paletress,Excavated Evil,Entomb,Museum Curator
rogue:Tomb Pillager,Unearthed Raptor?
shaman:Ancestral Knowledge,Totem Golem,Elemental Destruction,Thunder Bluff Valiant,Tunnel Trogg
warlock:Demonwrath,Imp Gang Boss,Dark Peddler
warrior:Bash
neutral: dragon-activated cards,Emperor Thaurissan,Justicar Trueheart,Chillmaw,Sir Finley Mrrgglton,Brann Bronzebeard,Elise Starseeker,Reno Jackson (RIP)

the "?" means that the card doesn't have a big impact on the current meta, but is still mentionable

Summary: all dragon decks rotate out, all Reno decks rotate out, and shaman will have a hard time

Discuss and let me know if I missed anything! :)

Pointless discussion. We don't know which decks are dead until we see the cards in the new set.

Freeze mage, midrange hunter, handbuff paladin, dragon paladin, control warrior...viable?...oh my sides.

Zzzzz wall of incomprehensible text which will all be totally Irrelevant in light of the 135 new cards which will be released soon 

Renolock will be dead without reno, we dont have great neutral heal cards. Refreshment vendor is rotating out too btw.

Actually we're losing ice lance so you should set freeze mage to dead.

So maaany wrong things...

1.control shamma isn't dead, Jinyu is far better than healing wave anyways and volcano clears a lot of health from the plus you still have the crussher shamman build (yes it was called crusher shamman first, not mean shamman nor bog champ shamman) with Earth Elemental [/card]and [card]acestral spirit, plus whatever elemental support we're getting.

2. Reno Mage and lock are dead, Solia and kazakus don't make for Reno's loss, they dor ely on that health boost and don't have other meaning of healing Plus burn Reno isn't conisistent enough to burn after they pop your block and we lose emperor anyway.

3. Highlander priest is not dead, Reno was a nice addition to highlander priest but nothing else, Reno is not a defining card for this deck that's wrongly called Reno priest opposedly to Warlock and Mage that abdolutely need Reno to make their singleton decks work.

4. there's no point on discussing zoolock, zoolock has been around for ever and thanks to guldan's hero power ( when do we get a warlock lady Heroine Blizzard >_<?) as long as there are one and 2 drops zoolock will always exist, and those early drops don't even have to be  good, remember that shield bearer and Young Priestess  used to appear a lot in zoo builds

for the other points we haven't seen the cards yet

In the next rotation we are losing an expansion and two adventures. So many good cards and decks we've been playing since standart. 

I've been playing since BrM. Losing BrM and LoE is harder for me than losing GvG and Naxx.

I'm going to list the impactful cards and decks what we're going to lose. Let's hope new year is going to be great.

Blackrock Mountain

• Quick Shot - Most of Hunter decks.
• Flamewaker - Tempo Mage.
• Dragon Consort - Dragon Paladin.
• Solemn Vigil - Control Paladin.
• Twilight Whelp - Dragon Priest.
• Dark Iron Skulker - Midrange Rogue.
• Gang Up - Mill Rogue.
• Lava Shock- Aggro Shaman.
• Imp Gang Boss - Most of Warlock decks.
• Demonwrath - Renolock.
• Revenge - Control Warrior.
• Emperor Thaurissan - Most of the decks.
• Grim Patron - Patron Warrior.
• Drakonid Crusher - Dragon Warrior.
• Blackwing Corruptor - Dragon decks.
• Blackwing Technician - Dragon decks.

The Grand Tournament

• Aviana - Combo Druid.
• Astral Communion - Ramp Druid.
• Druid of the Saber - Beast Druid.
• Living Roots - Most of Druid decks.
• Lock and Load - Maly/Yogg Hunter.
• Powershot - Maly/Yogg Hunter.
• King's Elekk - Midrange Hunter.
• Arcane Blast - Tempo Mage.
• Mysterious Challenger - Secret Paladin.
• Competitive Spirit - Secret Paladin.
• Wyrmrest Agent - Dragon Priest.
• Flash Heal - Control Priest.
• Burgle - Burgle Rogue.
• Elemental Destruction - Control Shaman.
• Thunder Bluff Valiant- Midrange Shaman.
• Healing Wave - Control Shaman.
• Totem Golem - Aggro Shaman.
• Alexstrasza's Champion - Dragon Warrior.
• Bash - Control Warrior.
• Chillmaw - Dragon decks.
• Justicar Trueheart - Control Warrior / Control Priest.
• Gormok the Impaler - Zoolock.
• Twilight Guardian - Dragon decks.
• Argent Horserider - Aggro decks.

League of Explorers

• Raven Idol - Most of Druid decks.
• Mounted Raptor - Beast Druid.
• Ethereal Conjurer - Most of Mage decks.
• Forgotten Torch - Most of Mage decks.
• Anyfin Can Happen- Murloc Paladin.
• Keeper of Uldaman - Most of Paladin decks.
• Excavated Evil - Control Priest.
• Entomb - Control Priest.
• Museum Curator - N'zoth Priest.
• Tomb Pillager - Most of Rogue decks.
• Unearthed Raptor - N'zoth Rogue.
• Everyfin is Awesome - Murloc Shaman.
• Tunnel Trogg - Aggro / Midrange Shaman.
• Dark Peddler - Most of Warlock decks.
• Fierce Monkey - Midrange Warrior.
• Reno Jackson - Reno decks. Now become Kazakus decks.
• Elise Starseeker - Control decks.
• Brann Bronzebeard - Most of decks.
• Sir Finley Mrrgglton - Aggro / Midrange decks.
• Djinni of Zephyrs - Combo Priest.

Hall of Fame

• Azure Drake - Most of decks. Staple 5 Drop.
• Sylvanas Windrunner - Most of decks. Staple 6 Drop.
• Ragnaros the Firelord - Most of decks. Staple late-game card.
• Conceal - Miracle Rogue.
• Ice Lance - Freeze Mage.
• Power Overwhelming - Zoolock / Renolock.

just tiny correction Drakonid Operative - Dragon Priest not Dragon Warrior NVM, I think I was completely blind, I saw Drakonid Operative, its not rotated out tho -_- what's wrong with me

Just another correction. Drakonid Operative will stay in standard for another year. 

Quote from Le_Merovingian >>

Thanks for the effort!

just tiny correction Drakonid Operative - Dragon Priest not Dragon Warrio

What?!!

I wrote accidently Drakonid Operative (idk why), and then I changed it immediately after I posted. But I wasn't quick enough. -lol

Its some pretty significant cards that are leaving this time. I wish they would have taken out the gadgetzan cards as well. Damn i'm sick of jades..

Just imagine how hard must be create all new cards , when there are so much leaving this year + some of them so usable and powerful .