Version 1.10
Version 1.10 is now in the default game version. The focus of 1.10 is an updated OpenStreetMap layer, plus updates to some of the other map layers. This means a full redownload of the game is required when updating to version 1.10.
In addition to the new map data, a new map rendering engine has also been implemented, This new engine is improved in all aspects. For example it has much higher hillsahding quality:

A new style has been implemented for OSM data, with better colors and less noisy textures:

It is also enabled for map style mods, and you can already find some community provided mods in the Steam Workshop to both modify the base map and to display new information in the underlying OSM database. Read the devblogs for August, September and October for all the details:
https://carloscarrasco.com/nimby-rails-august-2023/
https://carloscarrasco.com/nimby-rails-september-2023/
https://carloscarrasco.com/nimby-rails-october-2023/
In addition to the new map data, a new map rendering engine has also been implemented, This new engine is improved in all aspects. For example it has much higher hillsahding quality:

A new style has been implemented for OSM data, with better colors and less noisy textures:

It is also enabled for map style mods, and you can already find some community provided mods in the Steam Workshop to both modify the base map and to display new information in the underlying OSM database. Read the devblogs for August, September and October for all the details:
https://carloscarrasco.com/nimby-rails-august-2023/
https://carloscarrasco.com/nimby-rails-september-2023/
https://carloscarrasco.com/nimby-rails-october-2023/