Version 5.6.2:

• fixes a compatibility issue with older airport files,
  
• fixes a possible issue with dpi scaling.

The updates include more detailed coastlines, changes to restricted areas, added displaced thresholds and waypoints on the localizer (where applicable), corrections for magnetic variance, and updates to various beacons/SIDs. Note: when loading an older savegame for the first time after updating, the newer runway data may cause go arounds on some locations.

Added a Color menu, where you can toggle between various colors for things like labels, targets, runways, and more. You can find the Color menu in the Display menu.

• The heading of departures can now be adjusted without having to manually disable SID mode first.
  
• Option to zoom towards the cursor instead of towards the center of the screen. See the Controls menu (press F7) to toggle the 'Zoom Relative' setting between 'Cursor' and 'Center of screen'.
  
• Previous sound setting is saved when switching sound on/off.
  
• Higher max rate of departures by having tighter margins to nearby traffic/clouds.
  
• For custom airports[startgrid.itch.io]:
  
  • Colored lines can be added to a new [background] section at the end of the file.
    
  • Lat/Long coordinates can be given in simple decimal degrees (so without needing to add letters) by setting decimaldegrees=true.
    
  • Added optional localizer waypoint pronunciation.
    
  • The visible part of a circular area can be limited by headings using the drawdegrees property
    
  • Added option to add more specific from/to headings to the airline list.
    
  • See the example.txt on how to use these new features.

Minor adjustments and bug fixes in v5.5.5 (4 April):

• Fixed issue where planes inbound secondary airports could not land after a go-around in case the runway configuration had changed to a takeoff-only config. For example, planes inbound RD airport may now change destination to EHAM after going around.
  
• Blue plane messages now remain visible after a runway configuration change.
  
• Slightly reduced the climb rate of planes just after takeoff.
  
• For custom airports[startgrid.itch.io], adjustments to the transition altitude/lowest flight level at USA airports, to make it closer to reality: 'transitionaltitude=18000' will now be interpreted as 17000 to make FL180 available at high pressures, as it is in real life. The lowest selectable FL will not drop below FL180. And the lowest FL will now increase in steps of 10 instead of 5 (for example FL190 instead of FL185). These adjustments only affect 'usa=true' airports with a transition altitude set at 18000 feet and pressure simulation enabled (Realism menu).
  
• Added the property 'transitionlevel', but only to keep better compatibility with older airport files. This deprecated property was removed in v5.5 due to the addition of variable pressure, but now the property will be interpreted as 'transitionaltitude'. Newer airport files can better use either 'transitionlevel' or 'transition' to avoid naming confusion.
  
• Fixed missing displaced threshold for secondary airports.
  
• Planes leaving an APP route will obey speed restrictions.

And v5.5.6 (5 April) fixes an issue where the transition level at YSSY airport was incorrectly calculated.

Hotfix version 5.5.4:

• Fixed issues with binding keys in the F7 menu.
  
• Fixed incorrect initial flight level for planes on departure routes.

Hotfix v5.5.2 (20 Feb):

• Fixed missing handoff readbacks from departures at custom airports.
  
• Fixed game crash when switching airports caused by old savegames.

Hotfix v5.5.3 (21 Feb):

• Fixed wind change at YSSY scenario causing storms over the departure runway.
  
• Fixed stuck alt key after alt+tabbing.

Changelog for version 5.5:

• Added 3 new options to the 'Realism' menu: Air pressure, Random weather, and Frequencies. By default all 3 options are off, but if you want the gameplay to be more challenging and realistic, switch them on if you like.
  
  • The Pressure option adds air pressure simulation (QNH/altimeter). By default it's set to off (like in earlier versions; the pressure is fixed at standard pressure), to keep things simple. But when enabled, you can set the actual air pressure (at sea level) in the Weather menu. The air pressure mainly affects the height of the flight levels and the lowest usable flight level. It does not affect altitudes. To distinguish between altitudes and flight levels, an A or F is added to the label of the airplanes, depending on the transition altitude (the 'highest altitude') at the airport you are controlling.
    
  • The Random weather option automatically sets the weather (wind, pressure, and a small chance of clouds) when starting a new game. The weather can still be adjusted in the Weather menu at any time.
    
  • The Frequency option can be enabled if you like more realistic handoff readbacks: the H/O button is replaced by a 'radio frequency' button. Players that use custom airports may already have seen (or heard) this feature before, but now it's a toggleable feature.
  
• Added customizable keyboard bindings, and mouse control customization. Press F7 to open the Controls menu (also accessible via the About menu), and click on a function to change its binding. You can setup keys to your liking; you can even bind functions to the A-Z and 0-9 keys, which are by default used for Text Input (like 'A30' for altitude 3000). If you don't use Text Input to control planes, press F6 to disable Text Input, so you can use any key without conflicts. Some mouse controls can also be adjusted, for example the functionality of the scroll wheel in combination with mouse clicks. You can experiment with different control settings and if things go wrong, just press the Defaults button to restore all controls back to the default settings.
  
• Added 'speech rate' setting to the Sound menu. By default, the speech rate changes automatically based on the time multiplier and the number of planes, but now it can be set at a fixed rate.
  
• Simplified the Custom Traffic menu; it now has 4 buttons for all of the 4 custom traffic modes, so there's no need to toggle the 'skill' and 'flow' buttons.
  
• Updated runway names at Luton and Orly due to magnetic variation.
  
• Text Input 'II' can be used as an alternative to longpressing the ILS or SID button.
  
• For Custom airports[startgrid.itch.io]: option to set the maximum climb rate per planetype.
  
• Various minor adjustments.
  
• Hotfix v5.5.1: fixed issue where Caps Lock or Num Lock interfered with keyboard shortcuts.

Small update (v5.4.2):

• Fixed achievements not triggering since previous update.
  
• Fixed typos.

Update v5.4 changelog:

• Added 'errors' button to the Delay menu. The errors setting simulates miscommunications and small pilot errors (including readback errors, planes not following the instruction correctly, and more). When enabled, these errors happen randomly which requires you to monitor the planes more closely, to be able to correct any mistakes before incidents happen. By default, these errors are set to 'off' (like in earlier versions). Click the errors button to toggle it to Low or High chance of errors, for more realistic pilot behavior. Works best if readbacks (sound menu) are enabled as well.
  
• A history of all plane tracks since starting a game is now shown when pausing the game (ESC).
  
• Added 'closest distance' information after a separation incident has happened. A message is displayed at the bottom of the screen, containing the horizontal and vertical distance between two planes.
  
• Improvements to the hints for beginning players.
  
• Some minor bug fixes.
  
• For custom airports[startgrid.itch.io]:
  
  • Departures following a route now continue on their heading at the end of the route, instead of flying outwards from the center of the airspace.
    
  • Entry points are located a bit closer to the airspace when using a polygon-shaped boundary (more similar to how it is for round airspaces).
    
  • Added 'strictspawn=false' property, which can be set to true if planes should be spawned precisely at the entry points (instead of a slightly random deviation left/right of the entry points).