Highlights:

Waypoints: for line construction (hold shift to place a waypoint)
Larger maps: Instead of 10, there are now 20 map extensions possible, which means that a game area of up to 1,600 km² (40 km x 40 km) can now be unlocked (up to now, up to 576 km² (24 km x 24 km) were possible)
Performance:
- Optimisation of performance, especially with high numbers of employees and buses
- Optimisation of RAM consumption and fixing of memory leaks and resulting crashes (e.g. when building long lines, ordering many buses, painting)
- Significant optimisation of the loading time and new faster save and load system, which also prevents the "Unexpected Mark Stack Overflow" error from occurring after the next save (the loading time of old savegames is still very high until they have been loaded and saved once with the new version)
  
  *Tested on large savegame with maximum company premise size in 4K with i7-9700K, RTX3070, 32GB RAM.

Changelog:

In the shift schedule there is now a settings menu to set the desired break between two shifts for buses and bus drivers
In the shift schedule settings, it is now possible to specify whether all tours within a shift must have the same preferred vehicle group
If line changes are allowed on certain lines, these are now more reliably taken into account and built into shifts
For lines with several different timetables, more sensible shifts are now generated by avoiding unnecessary service trips
Automatic allocation of buses to the respective preferred vehicle groups now works more reliably
Fixed a bug where the shift plan for some days could not be displayed in rare cases
Editing stops in advanced timetable mode no longer leads to an error message without reason ("No route could be determined for the selected stops")
Fixed a bug where everything was greyed out after the above error message appeared and the game had to be restarted

When building public service lines, it is now more clearly displayed what still needs to be connected to the line and what is already connected
Passengers can now no longer travel on service journeys
Fixed a bug that prevented passengers from travelling after 0 o'clock
Fixed a bug that caused passengers to board a bus that would not leave for more than 15 minutes, even though a bus of the same line with an earlier departure was available
Up to 250 stops can now be added to a line
Fixed green areas when loading maps near national borders

Fixed various bugs where various tasks such as refuelling, washing were not performed and the bus could then no longer be used
Fixed bug where "Employee can't find the way" was incorrectly displayed
Drivers no longer complain about not having enough work while on holiday or training
Bus drivers on leave are no longer suggested for assignment to a shift that is about to start

Even if a bus has only minor damage, a smoke effect is now always displayed so that you can see at a glance whether the bus needs to be repaired or not
Fixed a bug where buses would sometimes sit in the depot for hours with a "running shift" status
When buying several buses at the same time, the correct amount is now always debited from the account
New camera in the paint shop, which can also be used to move along the bus
Fixed a bug that caused the selection made when choosing bus upgrades to be reset automatically all the time
Fixed a bug where used buses could have a defective air conditioner even though there was no air conditioner installed
Fixed a bug where buses for sale were no longer shown in the list
Corrected the position of the smoke effect on some buses
Adjusted the scaling of the Lion's City A78

When moving an object, it is no longer deleted when cancelled with Escape, but moved back to its original position
Fixed a bug where old parking places on the edge could no longer be deleted

Improved readability of complaints from customers in the service centre
The current line network coverage is now displayed in the research menu
Tooltips with hints (info boxes) are now hidden more reliably
Fixed several bugs that caused some UI elements to be cut off at some screen resolutions
Hourly wage in the employee overview is now rounded correctly
In the bus driver selection when spontaneously assigning a shift, the stress bar is now displayed with the correct colour

Bulgarian translation and currency added (many thanks to Daniel Petkov!)
New notification when the data volume of an internet contract is used up
The M hotkey can now be used to switch between the operating area and the map
"Back to main menu" now works reliably
Fixed a bug where too much money was deducted when extending the map
Fixed a bug where a loan was not removed after it was fully paid off
Fixed a bug where the camera could not be moved with right click at times
Fixed crash under MacOS
Visitors to the service centre no longer spawn too slowly during busy periods, preventing many customers from going to the service centre until after closing time