Character Release Dates

Aweberman

Reposting and continuing from the first post:

10 Sep 2015   Silver Surfer (Skyrider)
 5 Oct 2015   Wolverine (Old Man Logan)
12 Nov 2015   Jean Grey (Phoenix)

14 Jan 2016   Spider-Man (Back in Black)
25 Feb 2016   Green Goblin (Norman Osborn)
 5 May 2016   Iron Man (Mark XLVI)
 5 May 2016   Captain America (First Avenger)
14 Jul 2016   The Hulk (Bruce Banner)
11 Aug 2016   Black Bolt (Inhuman King)
 1 Sep 2016   Black Widow (Natasha Romanoff)
 3 Nov 2016   Doctor Strange (Sorcerer Supreme)
22 Dec 2016   Thanos (The Mad Titan)

 2 Feb 2017   Black Panther (Civil War)
 9 Mar 2017   Hawkeye (Clint Barton)
27 Apr 2017   Star-Lord (Awesome Mix Volume 2)
 1 Jun 2017   Doctor Octopus (Classic)
 6 Jul 2017   Spider-Man (Peter Parker)
24 Aug 2017   Daredevil (Matt Murdock)
 5 Oct 2017   Gambit (Classic)
 2 Nov 2017   Thor (Gladiator)
14 Dec 2017   Archangel (Classic)

25 Jan 2018   Ghost Rider (Robbie Reyes)
 8 Mar 2018   Jessica Jones (Alias Investigations)
19 Apr 2018   Captain America (Infinity War)
17 May 2018   Okoye (Warrior General)
28 Jun 2018   Wasp (Hope Van Dyne)
 9 Aug 2018   Loki (God of Mischief)
20 Sep 2018   Kitty Pryde (Uncanny X-Men)
18 Oct 2018   Cable (Nathan Summers)
14 Dec 2018   Kingpin (Spider-Verse)

17 Jan 2019   Doctor Doom (God Emperor)
28 Feb 2019   Captain Marvel (Galactic Warrior)
28 Mar 2019   Hela (Goddess of Death)
16 May 2019   Rescue (Pepper Potts)
 6 Jun 2019   Storm (Ororo Munroe)
18 Jul 2019   Iceman (Bobby Drake)
22 Aug 2019   Professor X (Classic)
31 Oct 2019   Carnage (Prophet of Knull)
12 Dec 2019   Beta Ray Bill (Korbinite Cyborg)

 6 Feb 2020   Mister Sinister (Nathaniel Essex)
 5 Mar 2020   Havok (Classic)
 2 Apr 2020   The Hulk (Immortal)
30 Apr 2020   Yelena Belova (Black Widow)
14 May 2020   Apocalypse (Classic)
11 Jun 2020   Onslaught (Psionic Entity)
 9 Jul 2020   Killmonger (Erik Stevens)
20 Aug 2020   Wolverine (Samurai Daken)
17 Sep 2020   Heimdall (The Gatekeeper)
15 Oct 2020   Deadpool (Spirit of Vengeance)
26 Nov 2020   Magneto (Age of Apocalypse)
24 Dec 2020   Adam Warlock (Infinity Watch)

21 Jan 2021   Yellowjacket (Darren Cross)
18 Feb 2021   Cyclops (Phoenix Five)
18 Mar 2021   Colossus (Phoenix Five)
15 Apr 2021   Scarlet Witch (WandaVision)
13 May 2021   Knull (King in Black)
10 Jun 2021   Ronan (The Accuser)
 8 Jul 2021   Electro (Francine Frye)
 5 Aug 2021   Odin (All-Father)
 2 Sep 2021   Shang-Chi (Origin)
30 Sep 2021   Ultron (Age of Ultron)
28 Oct 2021   Gamora (Deadliest Woman)
25 Nov 2021   Sersi (Eternals)
23 Dec 2021   Big Wheel (Jackson Wheele)

20 Jan 2022   Abigail Brand (Commander of S.W.O.R.D.)
17 Feb 2022   Elektra (Woman Without Fear)
17 Mar 2022   Crystal (Crystalia Amaquelin)
14 Apr 2022   Moon Knight (Avatar of Khonshu)
12 May 2022   Gargantos (Multiverse of Madness)
 9 Jun 2022   Kamala Khan (Origin)
 7 Jul 2022   Thor (Mighty Thor)
 4 Aug 2022   Chasm (Ben Reilly)
 1 Sep 2022   She-Hulk (Immortal)
29 Sep 2022   Emma Frost (Phoenix Five)
27 Oct 2022   Arcade (Edward Acra)
24 Nov 2022   Riri Williams (Ironheart 3.0)
22 Dec 2022   Hit-Monkey (E.D.I. Suit)

19 Jan 2023   Wong (Sorcerer Supreme)
16 Feb 2023   Kang (The Conqueror)
16 Mar 2023   Magik (Phoenix Five)
13 Apr 2023   Jeffrey (Symbiote)
11 May 2023   High Evolutionary (Awesome Mix Vol. 3)
 8 Jun 2023   Spider-Gwen (Gwenom)
 6 Jul 2023   Venomsaurus Rex (Brockiosaurus)
 3 Aug 2023   Omega Red (Horseman of Pestilence)
31 Aug 2023   Vulture (Armor Wars)
28 Sep 2023   Miles Morales (Carnage Symbiote)
26 Oct 2023   Peggy Carter (Worthy)
23 Nov 2023   Goose (Flerken Family)
21 Dec 2023   The Hunter (Midnight Suns)

18 Jan 2024   X-23 (Weapon Hex)
15 Feb 2024   Victor Mancha (Victorious)
14 Mar 2024   Phyla-Vell (Martyr)
11 Apr 2024   Aunt May (Golden Oldie)
 9 May 2024   Jubilee (Phoenix Force)
 6 Jun 2024   May Parker (Spider-Girl)
 4 Jul 2024   Kaine Parker (Scarlet Spider)
 1 Aug 2024   Deadpool (Hotpool)
29 Aug 2024   Nova (Tanak Valt)
26 Sep 2024   Agatha Harkness (Coven Leader)
24 Oct 2024   Mephisto (Lord of Hell)

 Note that the dates I give are for the Legendary Store for each character. Starting with Professor X, there has been a Release Cover Store a week earlier. But the date for a 5* to enter Latest Legends tokens was for a long time based on when the character's CP store closes (though in mid-2022 this changed to the first day of the new season).

Kolence

These are the dates as best as I could find digging through old forum news and other threads and marvel articles for the 5's up to Daredevil. Should be mostly right at least...

Silver Surfer (Skyrider)	10	Sep	2015
Wolverine (Old Man Logan)	5	Oct	2015
Jean Grey (Phoenix)	12	Nov	2015
Spider-Man (Back in Black)	14	Jan	2016
Green Goblin (Norman Osborn)	25	Feb	2016
Captain America (First Avenger)	5	May	2016
Iron Man (Mark XLVI)	5	May	2016
The Hulk (Bruce Banner)	14	Jul	2016
Black Bolt (Inhuman King)	11	Aug	2016
Black Widow (Natasha Romanoff)	1	Sep	2016
Doctor Strange (Sorcerer Supreme)	3	Nov	2016
Thanos (The Mad Titan)	22	Dec	2016
Black Panther (Civil War)	2	Feb	2017
Hawkeye (Clint Barton)	9	Mar	2017
Star-Lord (Awesome Mix Volume 2)	27	Apr	2017
Doctor Octopus (Classic)	1	Jun	2017
Spider-Man (Peter Parker)	6	Jul	2017
Daredevil (Matt Murdock)	24	Aug	2017