All issues are listed in the order from the website
Issue 1: Spider-Man
Issue 2: Wolverine
Issue 3: Doctor Octopus
Subscription Gift 1: Magazine Binder (A new one every 15 issues)
Issue 4: The Thing
Issue 5: Magneto
Subscription Gift 2: Figurine Stand (A new one every 10 issues)
Issue 6: Blade
Special Issue 1: Hulk
Issue 7: Silver Surfer
Subscription Gift 3: Exclusive Spider-Man Figurine
Issue 8: Green Goblin
Issue 9: Captain America
Issue 10: Doctor Doom
Issue 11: Jean Grey Phoenix
Issue 12: Iron Man
Special Issue 2: Juggernaut
Issue 13: Daredevil
Issue 14: Storm
Issue 15: Thor
Issue 16: The Beast
Issue 17: Elektra
Issue 18: The Human Torch
Issue 19: The Punisher
Issue 20: Black Cat
Issue 21: Captain Britain
Issue 22: Ghost Rider
Issue 23: Kraven The Hunter
Issue 24: Mephisto
Issue 25: Cyclops
Issue 26: Ultron
Issue 27: Sandman
Issue 28: Mr Fantastic
Issue 29: Rogue
Issue 30: Black Panther
Issue 31: Angel; Archangel (Possible variant)
Issue 32: Venom
Issue 33: Iceman
Issue 34: Red Skull
Issue 35: Gambit
Issue 36: Sub-Mariner
Issue 37: Loki
Issue 38: She-Hulk
Issue 39: Mystique
Issue 40: Doctor Strange
Issue 41: Invisible Woman
Issue 42: Nightcrawler
Issue 43: Medusa
Issue 44: Iron Fist
Issue 45: Shadowcat
Issue 46: Captain Marvel [verification needed]
Issue 47: Emma Frost
Issue 48: The Vision
Issue 49: Bullseye
Issue 50: Hawkeye
Issue 51: Nick Fury
Issue 52: Warlock
Issue 53: Polaris
Issue 54: The Lizard
Issue 55: Scarlet Witch
Issue 56: Professor Xavier
Issue 57: Mysterio
Issue 58: Yelllowjacket and Wasp
Issue 59: Carnage
Issue 60: Luke Cage
Additional 20
Eaglemoss is planning another 20 figures. These are currently being considered:
Issue 61: Super Skrull
Issue 62: Spider-Woman (Unconfirmed as to which Spider-Woman)
Issue 63: Electro
Issue 64: Quicksilver
Issue 65: Dormammu
Issue 66: Black Bolt
Issue 67: Psylocke
Issue 68: Vulture
Issue 69: Deadpool
Issue 70: The Leader
Issue 71: Nova
Issue 72: Cable
Issue 73: Black Widow
Issue 74: Kang the Conqueror
Issue 75: Havok
Issue 76: Falcon
Issue 77: Ms Marvel
Issue 78: Wonder Man
Issue 79: Sabretooth
Issue 80: Banshee or Stan Lee (See below)
The final figure is not known but there is a high chance of it being Banshee or Stan Lee, which would bring a nice ending to the collection.
Specials
The characters featured in the specials are decided by a poll taken in reader surveys. Because of this, it is unknown which character will be included.
However, the first 2 were Hulk & Juggarnaut, and the other characters selectable were those in the same vein - much larger than the regular figurines.
The 3rd special has been confirmed as Collosus, in a letter included with subscriptions sent out during September.

Likely OTHER characters
Colossus (previously included in ballot) - CONFIRMED AS # 3
Kingpin
Galactus
Thanos (previously included in ballot)
Onslaught
Rhino
Blob
AS also been explained that the juggernaut special fig is currently out of stock.
other 5 special figurines are being decided upon (might have 10 or more)