Changelog for Patch 391 / GOG-29 (Windows) / GOG-31 (Mac) / GOG-27 (Linux) (added 01 September 2016):

NEW:

Plenty of new stuff to discover in the Emerged Island! A handful new events, 3 new treasures and a new and vicious opponent in a new area!
A new treasure is to be found in Shangri-La!
The Insight spending screen shows a tooltip for expected token value.
There is an option to increase the speed of Insight spending.
The Treasure Collection UI in the Main Menu now shows information about the bonus that can be obtained from it. Hover the bonus pool icons for any previously discovered treasure.
The Treasure collection UI in the Main Menu now also shows all unlocked Campfire Stories and your progress in unlocking them. (MTE)

BALANCE:

There is more gold available in Shangri-La.
Helpers have been reset to their values from patch 19.
Students now give 1-2 research, but cost 100 status to recruit. (first value)
Ulfberht Sword removed from tactician check in Saxon Island.
Lobbyists and Journalists price increased by 20%.
The pre-determination feature of Patch #18 has been removed from Discovery Mode. This means reloading now gives fresh roll game chances and encounter layouts.

FIXES:

Chairman Pinkerton's advice crashed when evaluating some Ruby Lotus bonuses.
Chairman Pinkerton can now advise on all different bonus types, where he ignored some previously.
Starter island doesn't hide what treasure you'll get anymore in the boss event.

Patch 394 (20 September 2016) / GOG-30 (Windows) / GOG-32 (Mac) / GOG-28 (Linux)

NEW:

Lobbyists and Journalists price increased by 20%.
Ulfberht Sword removed from tactician check in Saxon Island.
Starter island doesn't hide any more what treasure you'll get in the boss event.

BALANCE:

Increased price for later level research trees

FIXES:

Fixed loads and loads of texts
Fixed the King Crab's debuff
Fixed crash on Mt. Kailash
Fixed card duplication when stock was depleted
Fixed wrong stat calculation for Ivan's crew story

Patch 401 (27 October 2016) / GOG-31 (Windows) / GOG-33 (Mac) / GOG-29 (Linux)

Fixed "French Toast (+)" and "Loud and Clear (+)" achievements not working in certain cases
Level Up and Research Available notifications should now only pop-up once all events are done
Fixed item types not being checked correctly in both directions when swapping items
Fixed broken crew portrait buttons in Passport UI when in the Shop UI
Clarified mood switch tooltip for new players
Fixed Collection UI on narrow screens
Fixed bug with profile switching not correctly updating the crew selection UI

Patch 403 (13 November 2016) / GOG-32 (Windows) / GOG-34 (Mac) / GOG-30 (Linux)

It fixes the game getting stuck in a state where the UI is disabled after specific events.

Patch 406 (2 December 2016) / GOG-33 (Windows) / GOG-34 (Mac) / GOG-31 (Linux)

NEW

Added 4 items: Cork Hat, Boomerang, Biscuit Box and History Book!
Added a 2 new small events in Transylvania
Agatha's crew story now has an alternative, more dramatic ending

BALANCE

Will-o-the-Wisp now gives study for every 2 levels.
Rio's common token entourage weaker and a lot more expensive
Rio's encounter token entourage a bit more expensive
Stockholm Perk entourage a bit cheaper
All stat boosts from treasures doubled
Token boosting treasure options of treasures in the first 2 expeditions have been decreased by roughly 50%.

FIXES

Fixed UI lockup after using Mali tunnel or Llama Express.
Fixed crash for GOG users when receiving achievements
Added some missing animations
Lots of small event fixes

Changelog for Patch 407 / GOG-34 (Windows) / GOG-32 (Linux) / GOG-35 (Mac) (added 08 December 2016):

FIXES:

- Fixed infinite loop in Anna's crew story
- Fixed a lot of typos

New patch (415) added, but I don't know what the changelog says yet.

Changelog for Patch 415 / GOG-35 (Windows) / GOG-33 (Linux) / GOG-36 (Mac) (added 21 February 2017) :

NEW:
- Added Insight Limit. This is not exactly a limit, as you can always gain more insight. However before you leave an expedition you need to spend Insight so that it drops below your current limit. The limit starts at 3 and increases by 2 per expedition.

BALANCE
- Improved the gains of Special tokens from treasures a bit in late game.
- Viking's secret room doesn't give C ranked treasures anymore.

FIXES
- Fixed Treasure option for the Crab treasure.
- Fixed a missing string.
- Fixed campfire card: Tactical Insight!

Thanks for the head up :)

Changelog for patch 416 / GOG-36 (Windows) / GOG-37 (Mac) / GOG-34 (Linux) (added 24 February 2017):

FIXES

- Fixed an Egypt treasure pool.

Changelog for update GOG-38 (Mac) (added 27 February 2017):

- Fixed a sound issue with the Mac version of the game.

Changelog for update (added 10 April 2017):

- Added a mini-comic called The Emperor's Challenge to the bonus goodies section.

Changelog for Patch 440 (10 May 2017)

- Tons of content added to Transylvania and some to the Hungarian Fort. Go find it!
- Jan-Piet's captain perk changed to 5-10 Gold from Campaign and +4 Campaign tokens while using insight.
- Agatha's captain perk changed to +2 Study from using insight
- Cooking Pot now gives Tough instead of Stamina
- Captain Roche is now weak to Enraged, but has a bit more Spirit
- Transylvania wolves are easier to bully
- Hildegards card now creates a strong dislike with... you know who
- Added Light Sensitive Mode, which disables some flashing animations
- Fixed double treasure exploit during end of expedition

Changelog for patch 443 / (Windows) / (Mac) (added 11 May 2017):

NEW:

- Tons of content added to Transylvania and some to the Hungarian Fort. Go find it!
- You can now see what items/entourages the item and entourage shop contain before upgrading them
- Added Light Sensitive Mode, which disables some flashing animations. This replaces the option that turned off flashing warnings for resolve and research.

BALANCE:

- Jan-Piet's captain perk changed to 5-10 Gold from Campaign and +4 Campaign tokens while using insight.
- Agatha's captain perk changed to +2 Study from using insight
- Cooking Pot now gives Tough instead of Stamina
- Captain Roche is now weak to Enraged, but has a bit more Spirit
- Transylvania wolves are easier to bully
- Hildegards card now creates a strong dislike with... you know who

FIXES:

- Fixed double treasure exploit during end of expedition
- So. Many. Bugfixes.

Changelog for Patch 455 (22 May 2017)

NEW:
- New events in the Hungarian Fort and Mali! New treasure as well!
- A brand new shop is open through the engineering research! New orleans does not unlock through hyperspeed though.
- A brand new entourage hall has opened in Madrid! A few old entourage members return... Some have become a bit more expensive though...
- Fancied up loading screen!

BALANCE:
- Kiwi gets Occult instead of Architecture
- Nerfed Phailin's bonus to 5%
- Nerfed Min-Jeong a bit
- Hungarian Mix now applies to ALL crew members
- Songhai Sword gives 2 insight - Secretum gives 2 - Ace gives 1
- Legendary boots give 30 Armor and speech Defense instead of 40
- Changed achievements
--- "10 challenges in one expedition/overworld session" is now "20 porcelain points in one expedition/overworld session"
--- "Receive 5/10/25 unique trophies" is now "beat Rivaleux in 5/10/25 unique emperor challenges"
--- Achievements related to winning a game will also be achievable when winning an EC game (with exception of achievements specifically for renown mode / getting to the coronation).
- JP's merchant story now gives +3 Teach in Cape town

FIXES:
- Fixed save game compatibility for secret shop
- Fixed item ship crash
- Fixed crash when using the entourage specialist Minet
- Miles and Shadowmaster54 entourage now work as intended
- Removed an undisplayed Friendly Attitude condition for Emilia's level 5 Tranquility upgrade.
- Small text and event fixes
- Fixed a bug with JP's insight
- Fixed resolve counter not resetting properly after retrying arena in Discovery Mode
- Fixed Perk UI not updating when equiping items
- Fixed crash on Archipellago when More To Explore wasn't present
- Fixed issue that could cause expediton flow to get messed up
- Fixed crash when removing leaderboard entry
- Many event and typo fixes

Changelog for Patch 457 (06th July 2017)

FIXED:
- Fixed crash in Entourage shop
- Fixed Emperor Pleaser, Emperor's New Favourite Groove and some expedition achievements
- Fixed the legendary armor - archeology trinket

BALANCE:
- Min-Jeong captain's perk lowered to 3-5 Status/Gold
- Halved all Secret/Discovery/TreasureHunt multipliers
- Output from Irene's Skull lowered to 1 per 3 levels.
- removed 40 renown from secrets from Final Anagogic treasure
- Insight doubling entourage costs 1000 Status
- Government Secrets now only works on journalists
- Price of new entourage for insight increased.