Check out community member Thanatopsis’ detailed release date breakdown, with a graph!
Board Game Geek also has a visual rundown.
April 20, 2011:
Core Set [News]
July 22, 2011:
The Hunt for Gollum [News]
August 10, 2011:
Conflict at the Carrock [News]
September 11, 2011:
A Journey to Rhosgobel [News]
September 21, 2011:
The Massing at Osgiliath (Gen Con 2011) [News]
September 30, 2011:
The Hills of Emyn Muil [News]
November 2, 2011:
The Dead Marshes [News]
November 23, 2011:
Return to Mirkwood [News]
January 6, 2012:
Khazad-Dum [News]
March 1, 2012:
The Redhorn Gate [News]
March 21, 2012:
Road to Rivendell [News]
April 25, 2012:
The Watcher in the Water [News]
May 16, 2012:
The Long Dark [News]
June 20, 2012:
Foundations of Stone [News]
August 8, 2012:
Shadow and Flame [News]
August 17, 2012:
The Hobbit: Over Hill and Under Hill (Saga) [News]
October 16, 2012:
The Battle of Lake-Town (Gen Con 2012) [News]
November 26, 2012:
Heirs of Numenor [News]
February 22, 2013:
The Hobbit: On the Doorstep (Saga) [News]
May 9, 2013:
The Steward’s Fear [News]
May 31, 2013:
The Druadan Forest [News]
July 5, 2013:
Encounter at Amon Din [News]
August 9, 2013:
Assault on Osgiliath [News]
October 17, 2013:
The Blood of Gondor
September 20, 2013:
The Black Riders (Saga) [News]
October 30, 2013:
The Stone of Erech (Gen Con 2013) [News]
November 15, 2013:
The Morgul Vale [News]
February 21, 2014:
The Voice of Isengard [News]
June 26, 2014:
The Dunland Trap [News]
July 24, 2014:
The Three Trials [News]
August 21, 2014:
Trouble in Tharbad [News]
October 3, 2014:
The Road Darkens (Saga) [News]
October 23, 2014:
The Nin-in-Eilph [News]
November 11, 2014:
The Old Forest (Gen Con 2014) [News]
November 13, 2014:
Celebrimbor’s Secret [News]
December 23, 2014:
The Antlered Crown [News]
January 15, 2015:
Fog on the Barrow-downs (Fellowship 2015) [News]
April 3, 2015:
The Lost Realm [News]
April 23, 2015:
The Treason of Saruman (Saga) [News]
July 2, 2015:
The Wastes of Eriador [News]
July 30, 2015:
Escape from Mount Gram [News]
September 3, 2015:
Across the Ettenmoors [News]
September 24, 2015:
Treachery of Rhudaur [News]
November 6, 2015:
The Battle of Carn Dum [News]
November 19, 2015:
The Land of Shadow [News]
December 17, 2015:
The Dread Realm [News]
February 11, 2016:
The Grey Havens [News]
February 18, 2016:
The Ruins of Belegost (Gen Con 2015) [News]
Murder at the Prancing Pony (Fellowship 2015) [News]
May 5, 2016:
Flight of the Stormcaller [News]
June 2, 2016:
The Thing in the Depths [News]
June 30, 2016:
Temple of the Deceived [News]
August 4, 2016:
The Flame of the West [News]
September 1, 2016:
The Drowned Ruins [News]
September 29, 2016:
A Storm on Cobas Haven [News]
October 27, 2016:
The City of Corsairs [News]
November 23, 2016:
The Sands of Harad [News]
February 2, 2017:
The Mumakil [News]
March 16, 2017:
The Siege of Annuminas (Fellowship 2017) [News]
March 30, 2017:
Race Across Harad [News]
May 25, 2017:
Beneath the Sands [News]
July 20, 2017:
The Black Serpent [News]
October 5, 2017:
The Mountain of Fire [News]
December 7, 2017:
The Dungeons of Cirith Gurat [News]
February 8, 2018:
The Crossings of Poros [News]
February 15, 2018:
Attack on Dol Goldur (Fellowship 2018) [News]
March, 2018:
Revised Core (smaller box/dials/tokens) [Image comparison]
March 15, 2018:
Five Playmats [News]
June 14, 2018:
The Wilds of Rhovanion [News]
August 16, 2018:
The Withered Heath [News]
August 28, 2018:
Two Player Limited Edition Starter [News]
October 18, 2018:
Roam Across Rhovanion [News]
December 13, 2018:
Fire in the Night [News]
February 7, 2019:
The Ghost of Framsburg [News]
April 4, 2019:
Mount Gundabad [News]
June 6, 2019:
The Fate of the Wilderland [News]
June 28, 2019:
The Wizard’s Quest [News]
The Woodland Realm [News]
August 2, 2019:
A Shadow in the East [News]
November 15, 2019:
Wrath and Ruin [News]
January 10, 2020:
The City of Ulfast [News]
February 7, 2020:
Challenge of the Wainriders [News]
June 5, 2020:
Under the Ash Mountains [News]
July 31, 2020:
The Mines of Moria [News]
Escape from Khazad-Dum [News]
August 7, 2020:
The Land of Sorrow [News]
October 2, 2020:
The Fortress of Nurn [News]
December 4, 2020:
The Hunt for the Dreadnaught [News]
January 28, 2022:
Revised Core Set [News]
February 25, 2022:
The Dark of Mirkwood [News]
March 11, 2022:
Defenders of Gondor Starter Deck [News]
Dwarves of Durin Starter Deck [News]
Elves of Lorien Starter Deck [News]
Riders of Rohan Starter Deck [News]
June 17, 2022:
Angmar Awakened Hero Expansion [News]
August 19, 2022:
Angmar Awakened Scenario Expansion [News]
October 14, 2022:
LOTR Saga bundle 1 (Fellowship)
TBA:
LOTR Saga bundle 2
LOTR Saga bundle 3
A Long Extended Party
March 22, 2021:
The Children of Eorl [News]
June 28, 2021:
The Aldburg Plot [News]
August 6, 2021
The Scouring of the Shire [News]
September 9, 2021
Fire on the Eastemnet [News]
December 8, 2021
The Gap of Rohan [News]
February 23, 2022
The Glittering Caves [News]
June 13, 2022
Mustering of the Rohirrim [News]
Hall of Gondor 
