GOT Season 8 death "Predictions"

1. AI based predictions

Inverse and Unanimous made a number of predictions, with swarm AI, which combines machines and human experts in some kind of hivemind with magnets

Is Bran the NK: No (low confidence)
Will Tyrion Die: Yes (low confidence)
Will Jon die again: No (low confidence)

DataRobot made AI based predictions too - and Dany is the most likely to die

The Technical University of Munich also used machine learning, neural networks and models that used techniques related to Bayesean inference to make A song of Ice and Data. According to their analysis, Arya and Bran stark are very likely to die, while Dany, Tyrion and Jamie survive.

2. The Odds

MyBookie
Casino
BetVictor
Sportsbet

3. Leaks 

4Chan Leaks

Episode 1: Pastebin, DesiNerd
Episode 2: Pastebin, DesiNerd
Episode 3: Pastebin, Desinerd
Episode 4: Desinerd
Episode 5: Desinerd
Episode 6: Desinerd

Alleged HBO email leak, also from 4Chan

Freefolk Script Pages leaked

The images are pulled from Reddit and Imgur, but transcripts are still available here. Formatting matched the season 7 leaked script pages.
Short Description by WinterIsComing

Freefolk set images leaked by WatchersOnTheBalls 

Imgur Gallery 

WhiteGhost Leaks

Part 1
Part 2
Part 3
Part 4
Part 5

DrFrikki Leaks/ Predictions

Episode 1 translation
Episode 1 translation 2 
Another Description

Clayton "Leaks"

1, 2, 3

Freefolk Leaks

Closer to the release, there are a round of leaks from entities related to HBO, which are all surprisingly consistent. 

All the deaths: Edd, Pod, Jorah, Dondarrion, Rhaegal, Cersei, Dany, Jaime, Tyrion, Qyburn, Drogon, 

Episode 3 deaths: Lord Royce, Podric Payne, Beric Dondarrion, Jorah Mormont, Lyanna, Gendry

Afraidpart 1,2,3,4

/u/throwaway5873421

Compilation for 4-6

Semi-Confirmed Leaks

1, 2, 3, 4

4. The Original Plot Outline

According to the original plot outline, the five main characters that survive to the end are Tyrion, Bran, Arya, Jon and Dany.

Five central characters will make it through all three volumes, however, growing from children to adults and changing the world and themselves in the process. In a sense, my trilogy is almost a generational saga, telling the life stories of these five characters, three men and two women. The five key players are Tyrion Lannister, Daenerys Targaryen, and three of the children of Winterfell, Arya, Bran, and the bastard Jon Snow. All of them are introduced at some length in the chapters you have to hand.

Reconstruction of the redacted text

5. The Hitlist (4Chan Leaks)

Episode 1: Edd, Beric Dondarrion,
Episode 2: Grey Worm, Tormund, Podrick, Meera, Bran, Rhaegal, Robett Glover, Howland Reed, Ghost, Ned Umber
Episode 3: Lyanna Mormont
Episode 4: Theon
Episode 5: Lord Royce, Brienne of Tarth, Robin Arryn, Undead Viserion, Queen Daenerys Targaryen, Night King, Qyburn (off-screen), Queen Cersei Lannister, The Mountain and Varys
Episode 6: Jon, Drogon, The Hound, Jaime, Jorah, Euron

6. The Sun interview on the endings

Gwendoline Christie (Brienne)
It's so... it's so bittersweet you know. It's devastating, and it's awful. But in many regards, it is one of the most exciting things I've ever read and been a part of.

Isaac Hempstead Wright (Bran)
In my opinion we've ended it in the most convincing and compelling way possible. I think we've wrapped up really in the spirit of Game of Thrones, which is all you could ask for.

Liam Cunningham (Davos Seaworth)
The Show kinds of holds a mirror up to life and society and stuff like that. It'll satisfy some, there's always going to be people it's not going to satisfy. All we can do is try and tell the story.

Pilou Asbæk (Euron Greyjoy)
I can tell you something, I'm probably the only guy with an happy end.

Jerome Flynn (Bronn)
I was really really relieved when I read it, and the more I think about it the more I think what an amazing job they did as there is a lot of pressure trying to finish Game of Thrones. I think the boys did really well.

Mark Addy (Robert Baratheon)
We've got to... the living have got to beat the dead. Surely. I mean you can't have... can't, I know you'll see it could be... it could end in any way. 

7. Reviews

There is one by GQ and another one by The Telegraph

Key info:
1. Put Varys, Missandei, Grey Worm, Podrick and Tyrion on the death list
2. The Battle at Winterfell will happen in Episode 3

8. The Spotify Playlist

D&D have hidden clues to the ending in this Spotify playlist.

9. The confirmed deaths

Episode 1: Ned Umber

Episode 2: Nobody

Episode 3: Edd, Lyanna, Beric, Theon, Jorah, Mel, NK, Viserion

Episode 4: Rhaegal, Missandei

Episode 5: Varys, Euron, Qyburn, The Hound, The Mountain, Jaime, Cersei

Episode 6: Dany