Nope. The game is still continuously updated.
If you go to GitHub page of this game, the latest commit is 3 days ago.
Viewing post in Libre TrainSim - Free Train Simulator for everyone comments
oh my bad, i missed that. Do you know how to add tracks, the tutorial appears, but when I add other tracks, nothing turns up. I've gone into the files and put the .pck files in. they appear in the content section, but not in the play section. Any clue how to fix this? other people seem to have the same problem and aren't getting any help.