I really hope we get the update Steam got :(

It will be coming. It's just a question of when.

Is there even a way to contact Nisa or Durante?

Twitter maybe? Also this is the email: "games@ph3.at" and this is his Reddit username u/DuranteA

Probably then that is the best way to contact them. Just checked NISA's twitter page and they said that it will be on other platforms soon. So probably it's best to wait until the end of this week.

Yeah hopefully. Though other platforms might mean non-PC.

There are a number of games that have been updated on Steam that have never gotten the same updates on GOG. And the previous update happened much faster. Same day I believe.
So there is a reason.

Has it ever happened with a Trails game before? I honestly don't know, but I highly doubt it.

No, I don't believe so. But the ports have not all been done by the same people. The XSeed developer (Sara) has been pretty diligent about updating their games. But PH3 is another developer.

It's probably the usual GOG-as-lower-priority thing compounded by the holiday season. Also, reportedly at least one bug in the Steam version slipped through testing: https://www.reddit.com/r/Falcom/comments/1004kru/comment/j2j64k8/

There doesn't seem to be a record of 'second class citizens' problems with any Trails games. Apparently there's an issue with Ys VIII though: https://www.gog.com/forum/general/games_that_treat_gog_customers_as_second_class_citizens_v2/post2811

https://www.reddit.com/r/Falcom/comments/1045dtm/comment/j32x94y/

That would be nice.

It's up.

1.4.2

Major New Features

Water rendering
update: water now optionally uses a pixel shader which distorts the reflections/refractions. We tuned this for most bodies of water in the game and it looks pretty neat.
Added an "Auto Text Advance" feature. Note that there are a few events in-game where this will not apply since they require manual advance.
Check and trigger achievements on loading saves. This means that if you e.g. import a save from a playthrough of a different version of the game, applicable achievements will now trigger. (Note: this mostly applies to collection-type achievements)

Major Bug Fixes

Resolved an issue which could cause portraits not to be displayed in very specific circumstances.
Implement a number of English localization fixes

Additional Changes and Fixes

Improve font rendering performance by avoiding unneeded copies and temporary textures. This might be noticeable on slower systems when a lot of text is displayed.
Map geometry fixes on many maps, and some map collision fixes. Some of these are specific to ultra-wide monitors, but others are visible in 16:9 as well.
Show correct button prompt in detective notebook for "Details".
Add mouse support for the casino exchange menu.
Made direct camp menu save button prompt clickable.
Check whether detective rank is in a valid range when loading saves.
Fixed crash when failing to delete saves.
Allow cancellation of dialogs in the settings menu with the back button.
Always apply framerate limit, even when VSync is enabled (or forced off). This is to prevent issues when VSync is off globally.
Fixed an issue where battle character outlines could flicker with high FPS.

1.4.3 is a minor update which primarily aims to resolve some issues with the recently introduced auto text advance feature.

Improvements

Improve auto-text wait time calculation
Fix an issue where auto-text advances non-voiced messages despite set to voice-only
Fix message log color handling in some circumstances
Make prompt in shop menu to switch pages for large parties clickable

1.4.4
Fix the new water shader feature inadvertently affecting battle graphics in some specific circumstances (turning sprites black)