https://www.gog.com/game/loco_motive
Nice.
Exactly my kind of game.

https://www.gog.com/en/game/between_horizons
Interesting. Though this..:
"Failure is Very Much an Option: There are no second chances — submitting wrong solutions means the story will go on and players live with the consequences. A new and improved auto-save system will make sure there is no going back, as the story branches and endings are based on player decisions, none of which can be taken back."
...may kill the interest for some.

https://www.gog.com/en/game/empty_shell
The aesthetics look cool...but maybe not very "playable"?

Edit: ok - that giant hand..?WTF?

https://www.gog.com/en/game/broodstar
For fans of the genre surely interesting.

Some of those look interesting. But, is there a reason you're not using
https://www.gog.com/forum/general/the_unannounced_gog_new_game_thread ?

Sure.
Because these games ARE announced (have a look at the "carousel" on the main store page).
They just haven't received an official news post, yet.

Ah okay. I get it. Thanks!

No problem.
Btw: the latter three games have now their official news posts up

- https://www.gog.com/en/news/release_between_horizons
- https://www.gog.com/en/news/release_empty_shell
- https://www.gog.com/en/news/release_broodstar_with_soundtrack