We've just pushed another update to our navigation and airport database (including new airport layouts, frequencies, fixes, VORs, and more).
You will need to restart the app to receive the updated database.
Airport editing is an ongoing task to keep up to date with real world changes, as well as adding more airports to Infinite Flight. The Airport Editing team is doing an amazing job at adding content to Infinite Flight, and anyone can join to help adding new airports or improving existing one!
If you would like to help, you can get started on our forum.